1173 + Interview Questions in Statistics Page 18 InterviewSolution

851.	A market research group conducted a survey of 1000 persons and reported that 750 persons take cigarette and 450 persons take whisky. What is the least number that must have both take cigarette and whisky.
Answer» A market research group conducted a survey of 1000 persons and reported that 750 persons take cigarette and 450 persons take whisky. What is the least number that must have both take cigarette and whisky.

Discussion

852.	Distinguish between a bar diagram and a histogram.
Answer» Distinguish between a bar diagram and a histogram.

Discussion

853.	Question 7 To find out the concentration of SO2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Concentration of SO2(in pmm)Frequency0.00−0.0440.04−0.0890.08−0.1290.12−0.1620.16−0.2040.20−0.242 Find the mean concentration of SO2 in the air.
Answer» Question 7 To find out the concentration of $S O_{2}$ in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: $\begin{matrix} Concentration of S O_{2} (in pmm) & Frequency 0.00 - 0.04 & 4 0.04 - 0.08 & 9 0.08 - 0.12 & 9 0.12 - 0.16 & 2 0.16 - 0.20 & 4 0.20 - 0.24 & 2 \end{matrix}$ Find the mean concentration of $S O_{2}$ in the air.

853.

Question 7 To find out the concentration of SO2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Concentration of SO2(in pmm)Frequency0.00−0.0440.04−0.0890.08−0.1290.12−0.1620.16−0.2040.20−0.242 Find the mean concentration of SO2 in the air.

Answer»

Question 7
To find out the concentration of $S O_{2}$ in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below:

$\begin{matrix} Concentration of S O_{2} (in pmm) & Frequency 0.00 - 0.04 & 4 0.04 - 0.08 & 9 0.08 - 0.12 & 9 0.12 - 0.16 & 2 0.16 - 0.20 & 4 0.20 - 0.24 & 2 \end{matrix}$

Find the mean concentration of $S O_{2}$ in the air.

Discussion

854.	The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of the data and compare them.Monthly~consumption~(in~units)Number~of~consumers65−85485−1055105−12513125−14520145−16514165−1858185−2054
Answer» The following frequency distribution gives the monthly consumption of electricity of $68$ consumers of a locality. Find the median, mean and mode of the data and compare them. $\begin{matrix} Monthly~consumption~(in~units) & Number~of~consumers 65 - 85 & 4 85 - 105 & 5 105 - 125 & 13 125 - 145 & 20 145 - 165 & 14 165 - 185 & 8 185 - 205 & 4 \end{matrix}$

854.

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of the data and compare them.Monthly~consumption~(in~units)Number~of~consumers65−85485−1055105−12513125−14520145−16514165−1858185−2054

Answer»

The following frequency distribution gives the monthly consumption of electricity of $68$ consumers of a locality. Find the median, mean and mode of the data and compare them.

$\begin{matrix} Monthly~consumption~(in~units) & Number~of~consumers 65 - 85 & 4 85 - 105 & 5 105 - 125 & 13 125 - 145 & 20 145 - 165 & 14 165 - 185 & 8 185 - 205 & 4 \end{matrix}$

Discussion

855.	The product of 5 geometric means inserted between 2 and 72 is
Answer» The product of 5 geometric means inserted between 2 and 72 is

Discussion

856.	How would you differentiate between an ancillary and a tiny unit?
Answer» How would you differentiate between an ancillary and a tiny unit?

Discussion

857.	The following data shows monthly savings of 100 families, the difference between modal and mean monthly savings lies between ___. (Given that modal class is the class having the highest frequency) Monthly savings(Rs) Number of families 1000−2000142000−3000153000−4000214000−5000275000−600025
Answer» The following data shows monthly savings of 100 families, the difference between modal and mean monthly savings lies between ___. (Given that modal class is the class having the highest frequency) $\begin{matrix} M o n t h l y s a v i n g s (R s) & N u m b e r o f f a m i l i e s 1000 - 2000 & 14 2000 - 3000 & 15 3000 - 4000 & 21 4000 - 5000 & 27 5000 - 6000 & 25 \end{matrix}$

857.

The following data shows monthly savings of 100 families, the difference between modal and mean monthly savings lies between ___. (Given that modal class is the class having the highest frequency) Monthly savings(Rs) Number of families 1000−2000142000−3000153000−4000214000−5000275000−600025

Answer»

The following data shows monthly savings of 100 families, the difference between modal and mean monthly savings lies between ___. (Given that modal class is the class having the highest frequency)

$\begin{matrix} M o n t h l y s a v i n g s (R s) & N u m b e r o f f a m i l i e s 1000 - 2000 & 14 2000 - 3000 & 15 3000 - 4000 & 21 4000 - 5000 & 27 5000 - 6000 & 25 \end{matrix}$

Discussion

858.	Give the limitations of diagrammatic representation.
Answer» Give the limitations of diagrammatic representation.

Discussion

859.	The modal class for the following distribution is
Answer» The modal class for the following distribution is

Discussion

860.	What is the rate of inflation for the year 2018 if the CPIs for the years 2017 and 2018 are 300 and 305 respectively?
Answer» What is the rate of inflation for the year 2018 if the CPIs for the years 2017 and 2018 are 300 and 305 respectively?

Discussion

861.	Identify the scatter chart corresponding to the following data XY255768811101212161417
Answer» Identify the scatter chart corresponding to the following data $\begin{matrix} X & Y 2 & 5 5 & 7 6 & 8 8 & 11 10 & 12 12 & 16 14 & 17 \end{matrix}$

861.

Identify the scatter chart corresponding to the following data XY255768811101212161417

Answer»

Identify the scatter chart corresponding to the following data

$\begin{matrix} X & Y 2 & 5 5 & 7 6 & 8 8 & 11 10 & 12 12 & 16 14 & 17 \end{matrix}$

Discussion

862.	Observe the two pie charts given below and answer the 4 (four) items that follow. The pie charts show the sports played by all the female and male students in a college. A student must play at least one sport, i.e. he/she may play more than one sport. The two pie charts plot the number of students involved in a particular sports category as a percentage of the total number of female and male students respectively. Q67. If the number of male students who play hockey is 30, then how many male students play cricket? किस समूह में फुटबॉल वाले छात्रों की संख्या अधिक है? उपर्युक्त पाइ चार्ट एक कॉलेज में सभी मिहला और पुरूष छात्रों द्वारा खेले जाने वाले खेलों को प्रदर्शित करते हैं। प्रत्येक छात्र को कम से कम एक खेल खेलना अनिवार्य है अर्थात् वह एक से अधिक खेल खेल सकता/सकती है। दो पाई चार्ट क्रमशः मिहला और पुरूष छात्रों की कुल संख्या के प्रतिशत के रूप में, किसी विशिष्ट खेल वर्ग में संलग्न छात्रों की संख्या को प्रदर्शित करते हैं। Q67. यदि हॉकी खेलने वाले पुरूष छात्रों की संख्या 30 है तो कितने पुरूष छात्र क्रिकेट खेलते हैं?
Answer» Observe the two pie charts given below and answer the 4 (four) items that follow. The pie charts show the sports played by all the female and male students in a college. A student must play at least one sport, i.e. he/she may play more than one sport. The two pie charts plot the number of students involved in a particular sports category as a percentage of the total number of female and male students respectively. Q67. If the number of male students who play hockey is 30, then how many male students play cricket? किस समूह में फुटबॉल वाले छात्रों की संख्या अधिक है? उपर्युक्त पाइ चार्ट एक कॉलेज में सभी मिहला और पुरूष छात्रों द्वारा खेले जाने वाले खेलों को प्रदर्शित करते हैं। प्रत्येक छात्र को कम से कम एक खेल खेलना अनिवार्य है अर्थात् वह एक से अधिक खेल खेल सकता/सकती है। दो पाई चार्ट क्रमशः मिहला और पुरूष छात्रों की कुल संख्या के प्रतिशत के रूप में, किसी विशिष्ट खेल वर्ग में संलग्न छात्रों की संख्या को प्रदर्शित करते हैं। Q67. यदि हॉकी खेलने वाले पुरूष छात्रों की संख्या 30 है तो कितने पुरूष छात्र क्रिकेट खेलते हैं?

862.

Observe the two pie charts given below and answer the 4 (four) items that follow. The pie charts show the sports played by all the female and male students in a college. A student must play at least one sport, i.e. he/she may play more than one sport. The two pie charts plot the number of students involved in a particular sports category as a percentage of the total number of female and male students respectively. Q67. If the number of male students who play hockey is 30, then how many male students play cricket? किस समूह में फुटबॉल वाले छात्रों की संख्या अधिक है? उपर्युक्त पाइ चार्ट एक कॉलेज में सभी मिहला और पुरूष छात्रों द्वारा खेले जाने वाले खेलों को प्रदर्शित करते हैं। प्रत्येक छात्र को कम से कम एक खेल खेलना अनिवार्य है अर्थात् वह एक से अधिक खेल खेल सकता/सकती है। दो पाई चार्ट क्रमशः मिहला और पुरूष छात्रों की कुल संख्या के प्रतिशत के रूप में, किसी विशिष्ट खेल वर्ग में संलग्न छात्रों की संख्या को प्रदर्शित करते हैं। Q67. यदि हॉकी खेलने वाले पुरूष छात्रों की संख्या 30 है तो कितने पुरूष छात्र क्रिकेट खेलते हैं?

Answer»

Observe the two pie charts given below and answer the 4 (four) items that follow.

The pie charts show the sports played by all the female and male students in a college. A student must play at least one sport, i.e. he/she may play more than one sport. The two pie charts plot the number of students involved in a particular sports category as a percentage of the total number of female and male students respectively.

Q67. If the number of male students who play hockey is 30, then how many male students play cricket?

किस समूह में फुटबॉल वाले छात्रों की संख्या अधिक है?

उपर्युक्त पाइ चार्ट एक कॉलेज में सभी मिहला और पुरूष छात्रों द्वारा खेले जाने वाले खेलों को प्रदर्शित करते हैं। प्रत्येक छात्र को कम से कम एक खेल खेलना अनिवार्य है अर्थात् वह एक से अधिक खेल खेल सकता/सकती है। दो पाई चार्ट क्रमशः मिहला और पुरूष छात्रों की कुल संख्या के प्रतिशत के रूप में, किसी विशिष्ट खेल वर्ग में संलग्न छात्रों की संख्या को प्रदर्शित करते हैं।

Q67. यदि हॉकी खेलने वाले पुरूष छात्रों की संख्या 30 है तो कितने पुरूष छात्र क्रिकेट खेलते हैं?

Discussion

863.	The price of a commodity is Rs 100 per unit and quantity supplied at this price is 500 units. If its price falls by 10 percent and quantity supplied falls to 400 units. Calculate its price elasticity.
Answer» The price of a commodity is Rs 100 per unit and quantity supplied at this price is 500 units. If its price falls by 10 percent and quantity supplied falls to 400 units. Calculate its price elasticity.

Discussion

864.	Why are open-end distributions used?
Answer» Why are open-end distributions used?

Discussion

865.	Random errors occur due to:
Answer» Random errors occur due to:

865.

Random errors occur due to:

Answer»

Random errors occur due to:

Discussion

866.	You ordered some goods from the online shopping store Amazon. In this context, i. You are the ___ ii. Amazon is the ___
Answer» You ordered some goods from the online shopping store Amazon. In this context, i. You are the ___ ii. Amazon is the ___

Discussion

867.	You want to buy a scooter which costs Rs. 40,000. However, you only have Rs 25,000 with you. This is a manifestation of______.
Answer» You want to buy a scooter which costs Rs. 40,000. However, you only have Rs 25,000 with you. This is a manifestation of______.

Discussion

868.	Calculate the mode of the following data : 4, 6, 5, 7, 9, 8, 10, 4, 7, 6, 5, 8, 7, 7, 9.
Answer» Calculate the mode of the following data : 4, 6, 5, 7, 9, 8, 10, 4, 7, 6, 5, 8, 7, 7, 9.

Discussion

869.	The number of companies listed on Bombay Stock Exchange(BSE) are_____.
Answer» The number of companies listed on Bombay Stock Exchange(BSE) are_____.

Discussion

870.	Five competitors in a beauty contest are ranked by three judges in the following order : Rank by Judge A12345Rank by Judge B24153Rank by Judge C13524 Using rank correlation coefficient, determine which pair of judges has the nearest approach to tastes in beauty.
Answer» Five competitors in a beauty contest are ranked by three judges in the following order : $\begin{matrix} Rank by Judge A & 1 & 2 & 3 & 4 & 5 Rank by Judge B & 2 & 4 & 1 & 5 & 3 Rank by Judge C & 1 & 3 & 5 & 2 & 4 \end{matrix}$ Using rank correlation coefficient, determine which pair of judges has the nearest approach to tastes in beauty.

870.

Five competitors in a beauty contest are ranked by three judges in the following order : Rank by Judge A12345Rank by Judge B24153Rank by Judge C13524 Using rank correlation coefficient, determine which pair of judges has the nearest approach to tastes in beauty.

Answer»

Five competitors in a beauty contest are ranked by three judges in the following order :

$\begin{matrix} Rank by Judge A & 1 & 2 & 3 & 4 & 5 Rank by Judge B & 2 & 4 & 1 & 5 & 3 Rank by Judge C & 1 & 3 & 5 & 2 & 4 \end{matrix}$

Using rank correlation coefficient, determine which pair of judges has the nearest approach to tastes in beauty.

Discussion

871.	Calculate the mean and the standard deviation for the following distribution. Marks20−3030−4040−5050−6060−7070−8080−90Number of students3613151454
Answer» Calculate the mean and the standard deviation for the following distribution. $\begin{matrix} Marks & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 & 70 - 80 & 80 - 90 Number of students & 3 & 6 & 13 & 15 & 14 & 5 & 4 \end{matrix}$

871.

Calculate the mean and the standard deviation for the following distribution. Marks20−3030−4040−5050−6060−7070−8080−90Number of students3613151454

Answer»

Calculate the mean and the standard deviation for the following distribution.

$\begin{matrix} Marks & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 & 70 - 80 & 80 - 90 Number of students & 3 & 6 & 13 & 15 & 14 & 5 & 4 \end{matrix}$

Discussion

872.	Calculate median and upper quartile for the following data : 22, 27, 15, 25, 30, 18, 27, 20, 21, 35, 23
Answer» Calculate median and upper quartile for the following data : 22, 27, 15, 25, 30, 18, 27, 20, 21, 35, 23

872.

Calculate median and upper quartile for the following data : 22, 27, 15, 25, 30, 18, 27, 20, 21, 35, 23

Answer»

Calculate median and upper quartile for the following data :

22, 27, 15, 25, 30, 18, 27, 20, 21, 35, 23

Discussion

873.	The Intelligence Quotient (IQ) of a person is a score calculated based on his/her performance on standardized tests which serves as a measure of the overall intelligence. Which of the following is true about IQ?
Answer» The Intelligence Quotient (IQ) of a person is a score calculated based on his/her performance on standardized tests which serves as a measure of the overall intelligence. Which of the following is true about IQ?

Discussion

874.	In a box, there are 100 balls numbered 1 to 100. 20 balls are randomly picked and the number written on them is noted down. The observations are
Answer» In a box, there are 100 balls numbered 1 to 100. 20 balls are randomly picked and the number written on them is noted down. The observations are

Discussion

875.	The number of years of education acquired by a sample of 100 adults in a locality is as follows. Years of education0−44−88−1212−1616−2020−24No. of people1022322484
Answer» The number of years of education acquired by a sample of 100 adults in a locality is as follows. $\begin{matrix} Years of education & 0 - 4 & 4 - 8 & 8 - 12 & 12 - 16 & 16 - 20 & 20 - 24 No. of people & 10 & 22 & 32 & 24 & 8 & 4 \end{matrix}$

Discussion

876.	The IQ and EQ scores for 5 people are shown below. Find the rank coefficient of correlation for their IQ and EQ. IQEQ10011511510512511014510090120
Answer» The IQ and EQ scores for 5 people are shown below. Find the rank coefficient of correlation for their IQ and EQ. $\begin{matrix} I Q & E Q 100 & 115 115 & 105 125 & 110 145 & 100 90 & 120 \end{matrix}$

Discussion

877.	You have a poultry farm and you make your living by selling chicken and eggs to the people in your community. You are a_______.
Answer» You have a poultry farm and you make your living by selling chicken and eggs to the people in your community. You are a_______.

Discussion

878.	Identify the different phases of the law of variable proportions from the following schedule. Give reasons for your answer. Units of variable input12345TPP (units)49131512
Answer» Identify the different phases of the law of variable proportions from the following schedule. Give reasons for your answer. $\begin{matrix} Units of variable input & 1 & 2 & 3 & 4 & 5 TPP (units) & 4 & 9 & 13 & 15 & 12 \end{matrix}$

878.

Identify the different phases of the law of variable proportions from the following schedule. Give reasons for your answer. Units of variable input12345TPP (units)49131512

Answer»

Identify the different phases of the law of variable proportions from the following schedule. Give reasons for your answer.

$\begin{matrix} Units of variable input & 1 & 2 & 3 & 4 & 5 TPP (units) & 4 & 9 & 13 & 15 & 12 \end{matrix}$

Discussion

879.	Mention two limitations of telephonic interview method.
Answer» Mention two limitations of telephonic interview method.

Discussion

880.	Is statistics a solution of our problems or means to indicate problems?
Answer» Is statistics a solution of our problems or means to indicate problems?

Discussion

881.	While representing a bivariate frequency distribution using a scatter chart, which of the following is correct?
Answer» While representing a bivariate frequency distribution using a scatter chart, which of the following is correct?

Discussion

882.	Discrete variables and continuous variables are examples of _________
Answer» Discrete variables and continuous variables are examples of _________

Discussion

883.	Find the mean and standard deviation using short cut method. xi 60 61 62 63 64 65 66 67 68 fi 2 1 12 29 25 12 10 4 5
Answer» Find the mean and standard deviation using short cut method. $\begin{matrix} x_{i} & 60 & 61 & 62 & 63 & 64 & 65 & 66 & 67 & 68 f_{i} & 2 & 1 & 12 & 29 & 25 & 12 & 10 & 4 & 5 \end{matrix}$

883.

Find the mean and standard deviation using short cut method. xi 60 61 62 63 64 65 66 67 68 fi 2 1 12 29 25 12 10 4 5

Answer»

Find the mean and standard deviation using short cut method.

$\begin{matrix} x_{i} & 60 & 61 & 62 & 63 & 64 & 65 & 66 & 67 & 68 f_{i} & 2 & 1 & 12 & 29 & 25 & 12 & 10 & 4 & 5 \end{matrix}$

Discussion

884.	Mode of a frequency distribution can be known graphically with the help of histogram. (True / False)
Answer» Mode of a frequency distribution can be known graphically with the help of histogram. (True / False)

Discussion

885.	From the following data relating to weights of 40 students in kg 138, 164, 150, 131, 144, 125, 149, 157, 146, 148, 140, 147, 136, 148, 152, 144, 168, 126, 138, 176, 163, 119, 150, 165, 146, 173, 142, 147, 135, 153, 142, 135, 140, 135, 161, 145, 150, 156, 145, 128 (i) Obtain the range of weights of the students. (ii) Divide the range into appropriate number of class-interval and obtain the frequency distribution. (iii) Find the number of students whose weight is (a) less than 145 kg (b) more than 155 kg (c) between 135 and 155 kg
Answer» From the following data relating to weights of 40 students in kg 138, 164, 150, 131, 144, 125, 149, 157, 146, 148, 140, 147, 136, 148, 152, 144, 168, 126, 138, 176, 163, 119, 150, 165, 146, 173, 142, 147, 135, 153, 142, 135, 140, 135, 161, 145, 150, 156, 145, 128 (i) Obtain the range of weights of the students. (ii) Divide the range into appropriate number of class-interval and obtain the frequency distribution. (iii) Find the number of students whose weight is (a) less than 145 kg (b) more than 155 kg (c) between 135 and 155 kg

885.

From the following data relating to weights of 40 students in kg 138, 164, 150, 131, 144, 125, 149, 157, 146, 148, 140, 147, 136, 148, 152, 144, 168, 126, 138, 176, 163, 119, 150, 165, 146, 173, 142, 147, 135, 153, 142, 135, 140, 135, 161, 145, 150, 156, 145, 128 (i) Obtain the range of weights of the students. (ii) Divide the range into appropriate number of class-interval and obtain the frequency distribution. (iii) Find the number of students whose weight is (a) less than 145 kg (b) more than 155 kg (c) between 135 and 155 kg

Answer»

From the following data relating to weights of 40 students in kg

138, 164, 150, 131, 144, 125, 149, 157, 146, 148,

140, 147, 136, 148, 152, 144, 168, 126, 138, 176,

163, 119, 150, 165, 146, 173, 142, 147, 135, 153,

142, 135, 140, 135, 161, 145, 150, 156, 145, 128

(i) Obtain the range of weights of the students.

(ii) Divide the range into appropriate number of class-interval and obtain the frequency distribution.

(iii) Find the number of students whose weight is

(a) less than 145 kg

(b) more than 155 kg

(c) between 135 and 155 kg

Discussion

886.	Which part of statistical table briefly explain about the figures entered in the columns ?
Answer» Which part of statistical table briefly explain about the figures entered in the columns ?

Discussion

887.	Let X = {1, 2, 3, 4}, Y = {1, 2, ..., 10} and f :X → Y be defined by f(x) = 2x + 1, x Є X. Then the range of f is
Answer» Let X = {1, 2, 3, 4}, Y = {1, 2, ..., 10} and f :X → Y be defined by f(x) = 2x + 1, x Є X. Then the range of f is

Discussion

888.	Consider the following statements in regard to National Business Register : Which of the above statements is/are correct?
Answer» Consider the following statements in regard to National Business Register : Which of the above statements is/are correct?

888.

Consider the following statements in regard to National Business Register : Which of the above statements is/are correct?

Answer»

Consider the following statements in regard to National Business Register :

Which of the above statements is/are correct?

Discussion

889.	Study the Lorenz curve and identify the correct statement(s).
Answer» Study the Lorenz curve and identify the correct statement(s).

Discussion

890.	What is the rate of inflation for the year 2000 if the CPIs for the years 1999 and 2000 are 54 and 59 respectively?
Answer» What is the rate of inflation for the year 2000 if the CPIs for the years 1999 and 2000 are 54 and 59 respectively?

Discussion

891.	What kind of diagrams are more effective in representing the following? (a) Monthly rainfall in a year (b) Composition of the population of Delhi by religion (c) Components of cost in a factory
Answer» What kind of diagrams are more effective in representing the following? (a) Monthly rainfall in a year (b) Composition of the population of Delhi by religion (c) Components of cost in a factory

891.

What kind of diagrams are more effective in representing the following? (a) Monthly rainfall in a year (b) Composition of the population of Delhi by religion (c) Components of cost in a factory

Answer»

What kind of diagrams are more effective in representing the following?

(a) Monthly rainfall in a year

(b) Composition of the population of Delhi by religion

(c) Components of cost in a factory

Discussion

892.	Which average would be suitable in the following cases? (i) Average size of readymade garments. (ii) Average intelligence of students in a class. (iii) Average production in a factory per shift. (iv) Average wages in an industrial concern. (v) When the sum of absolute deviations from average is least. (vi) When quantities of the variable are in ratios. (vii) In case of open-ended frequency distribution.
Answer» Which average would be suitable in the following cases? (i) Average size of readymade garments. (ii) Average intelligence of students in a class. (iii) Average production in a factory per shift. (iv) Average wages in an industrial concern. (v) When the sum of absolute deviations from average is least. (vi) When quantities of the variable are in ratios. (vii) In case of open-ended frequency distribution.

892.

Which average would be suitable in the following cases? (i) Average size of readymade garments. (ii) Average intelligence of students in a class. (iii) Average production in a factory per shift. (iv) Average wages in an industrial concern. (v) When the sum of absolute deviations from average is least. (vi) When quantities of the variable are in ratios. (vii) In case of open-ended frequency distribution.

Answer»

Which average would be suitable in the following cases?

(i) Average size of readymade garments.

(ii) Average intelligence of students in a class.

(iii) Average production in a factory per shift.

(iv) Average wages in an industrial concern.

(v) When the sum of absolute deviations from average is least.

(vi) When quantities of the variable are in ratios.

(vii) In case of open-ended frequency distribution.

Discussion

893.	What is classification of data? What should be its characteristics?
Answer» What is classification of data? What should be its characteristics?

Discussion

894.	The formula for Spearman's rank coefficient is ___
Answer» The formula for Spearman's rank coefficient is ___

Discussion

895.	Find the median iof the following data: Age greater than (in years)010203040506070No of person23021820016512373288
Answer» Find the median iof the following data: $\begin{matrix} Age greater than (in years) & 0 & 10 & 20 & 30 & 40 & 50 & 60 & 70 No of person & 230 & 218 & 200 & 165 & 123 & 73 & 28 & 8 \end{matrix}$

Discussion

896.	In Economics, data and Statistics are important because _____ .
Answer» In Economics, data and Statistics are important because _____ .

Discussion

897.	Identify the tense of the sentence. I will be coming for your dance performance.
Answer» Identify the tense of the sentence. I will be coming for your dance performance.

897.

Identify the tense of the sentence. I will be coming for your dance performance.

Answer»

Identify the tense of the sentence.

I will be coming for your dance performance.

Discussion

898.	The error in two readings of A are 0.01 and -0.03, then mean absolute error is ?
Answer» The error in two readings of A are 0.01 and -0.03, then mean absolute error is ?

Discussion

899.	Explain the following two sources of secondary data in India: (i) Census of India (ii) National Sample Survey Organisation (NSSO)
Answer» Explain the following two sources of secondary data in India: (i) Census of India (ii) National Sample Survey Organisation (NSSO)

899.

Explain the following two sources of secondary data in India: (i) Census of India (ii) National Sample Survey Organisation (NSSO)

Answer»

Explain the following two sources of secondary data in India:

(i) Census of India

(ii) National Sample Survey Organisation (NSSO)

Discussion

900.	The following table gives the daily income of ten workers in a factory. Find the arithmetic mean. WorkersABCDEFGHIJDaily Income (in Rs)120150180200250300220350370260
Answer» The following table gives the daily income of ten workers in a factory. Find the arithmetic mean. $\begin{matrix} Workers & A & B & C & D & E & F & G & H & I & J Daily Income (in Rs) & 120 & 150 & 180 & 200 & 250 & 300 & 220 & 350 & 370 & 260 \end{matrix}$

900.

The following table gives the daily income of ten workers in a factory. Find the arithmetic mean. WorkersABCDEFGHIJDaily Income (in Rs)120150180200250300220350370260

Answer»

The following table gives the daily income of ten workers in a factory. Find the arithmetic mean.

$\begin{matrix} Workers & A & B & C & D & E & F & G & H & I & J Daily Income (in Rs) & 120 & 150 & 180 & 200 & 250 & 300 & 220 & 350 & 370 & 260 \end{matrix}$

Discussion

Explore topic-wise InterviewSolutions in .

A market research group conducted a survey of 1000 persons and reported that 750 persons take cigarette and 450 persons take whisky. What is the least number that must have both take cigarette and whisky.

Distinguish between a bar diagram and a histogram.

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of the data and compare them.Monthly~consumption~(in~units)Number~of~consumers65−85485−1055105−12513125−14520145−16514165−1858185−2054

The product of 5 geometric means inserted between 2 and 72 is

How would you differentiate between an ancillary and a tiny unit?

Give the limitations of diagrammatic representation.

The modal class for the following distribution is

What is the rate of inflation for the year 2018 if the CPIs for the years 2017 and 2018 are 300 and 305 respectively?

Identify the scatter chart corresponding to the following data XY255768811101212161417

The price of a commodity is Rs 100 per unit and quantity supplied at this price is 500 units. If its price falls by 10 percent and quantity supplied falls to 400 units. Calculate its price elasticity.

Why are open-end distributions used?

Random errors occur due to:

You ordered some goods from the online shopping store Amazon. In this context, i. You are the ___ ii. Amazon is the ___

You want to buy a scooter which costs Rs. 40,000. However, you only have Rs 25,000 with you. This is a manifestation of______.

Calculate the mode of the following data : 4, 6, 5, 7, 9, 8, 10, 4, 7, 6, 5, 8, 7, 7, 9.

The number of companies listed on Bombay Stock Exchange(BSE) are_____.

Five competitors in a beauty contest are ranked by three judges in the following order : Rank by Judge A12345Rank by Judge B24153Rank by Judge C13524 Using rank correlation coefficient, determine which pair of judges has the nearest approach to tastes in beauty.

Calculate the mean and the standard deviation for the following distribution. Marks20−3030−4040−5050−6060−7070−8080−90Number of students3613151454

Calculate median and upper quartile for the following data : 22, 27, 15, 25, 30, 18, 27, 20, 21, 35, 23

The Intelligence Quotient (IQ) of a person is a score calculated based on his/her performance on standardized tests which serves as a measure of the overall intelligence. Which of the following is true about IQ?

In a box, there are 100 balls numbered 1 to 100. 20 balls are randomly picked and the number written on them is noted down. The observations are

The number of years of education acquired by a sample of 100 adults in a locality is as follows. Years of education0−44−88−1212−1616−2020−24No. of people1022322484

The IQ and EQ scores for 5 people are shown below. Find the rank coefficient of correlation for their IQ and EQ. IQEQ10011511510512511014510090120

You have a poultry farm and you make your living by selling chicken and eggs to the people in your community. You are a_______.

Identify the different phases of the law of variable proportions from the following schedule. Give reasons for your answer. Units of variable input12345TPP (units)49131512

Mention two limitations of telephonic interview method.

Is statistics a solution of our problems or means to indicate problems?

While representing a bivariate frequency distribution using a scatter chart, which of the following is correct?

Discrete variables and continuous variables are examples of _________

Find the mean and standard deviation using short cut method. xi 60 61 62 63 64 65 66 67 68 fi 2 1 12 29 25 12 10 4 5

Mode of a frequency distribution can be known graphically with the help of histogram. (True / False)

Which part of statistical table briefly explain about the figures entered in the columns ?

Let X = {1, 2, 3, 4}, Y = {1, 2, ..., 10} and f :X → Y be defined by f(x) = 2x + 1, x Є X. Then the range of f is

Consider the following statements in regard to National Business Register : Which of the above statements is/are correct?

Study the Lorenz curve and identify the correct statement(s).

What is the rate of inflation for the year 2000 if the CPIs for the years 1999 and 2000 are 54 and 59 respectively?

What kind of diagrams are more effective in representing the following? (a) Monthly rainfall in a year (b) Composition of the population of Delhi by religion (c) Components of cost in a factory

What is classification of data? What should be its characteristics?

The formula for Spearman's rank coefficient is ___

Find the median iof the following data: Age greater than (in years)010203040506070No of person23021820016512373288

In Economics, data and Statistics are important because _____ .

Identify the tense of the sentence. I will be coming for your dance performance.

The error in two readings of A are 0.01 and -0.03, then mean absolute error is ?

Explain the following two sources of secondary data in India: (i) Census of India (ii) National Sample Survey Organisation (NSSO)

The following table gives the daily income of ten workers in a factory. Find the arithmetic mean. WorkersABCDEFGHIJDaily Income (in Rs)120150180200250300220350370260

You ordered some goods from the online shopping store Amazon. In this context, i. You are the _ ii. Amazon is the _