1173 + Interview Questions in Statistics Page 14 InterviewSolution

651.	The quantity of goods supplied by a firm at different price points is given in the table below. Find the correlation coefficeint between price and quantity supplied. Price (X)Quantity (Y)620825103016352040
Answer» The quantity of goods supplied by a firm at different price points is given in the table below. Find the correlation coefficeint between price and quantity supplied. $\begin{matrix} P r i c e (X) & Q u a n t i t y (Y) 6 & 20 8 & 25 10 & 30 16 & 35 20 & 40 \end{matrix}$

651.

The quantity of goods supplied by a firm at different price points is given in the table below. Find the correlation coefficeint between price and quantity supplied. Price (X)Quantity (Y)620825103016352040

Answer»

The quantity of goods supplied by a firm at different price points is given in the table below. Find the correlation coefficeint between price and quantity supplied.

$\begin{matrix} P r i c e (X) & Q u a n t i t y (Y) 6 & 20 8 & 25 10 & 30 16 & 35 20 & 40 \end{matrix}$

Discussion

652.	Histogram and column diagram are the same method of presentation of data. (True / False)
Answer» Histogram and column diagram are the same method of presentation of data. (True / False)

Discussion

653.	List the demerits of random sampling.
Answer» List the demerits of random sampling.

Discussion

654.	The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 1st quartile.
Answer» The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 1st quartile.

Discussion

655.	Which of the following representations is right using tally marks? A) B) C)
Answer» Which of the following representations is right using tally marks? A) B) C)

655.

Which of the following representations is right using tally marks? A) B) C)

Answer»

Which of the following representations is right using tally marks?

A)

B)

C)

Discussion

656.	Calculate the mean and variance the data given below: Daily Wages0−1010−2020−3030−4040−50Number of Workers271053
Answer» Calculate the mean and variance the data given below: $\begin{matrix} Daily Wages & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 Number of Workers & 2 & 7 & 10 & 5 & 3 \end{matrix}$

656.

Calculate the mean and variance the data given below: Daily Wages0−1010−2020−3030−4040−50Number of Workers271053

Answer»

Calculate the mean and variance the data given below:

$\begin{matrix} Daily Wages & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 Number of Workers & 2 & 7 & 10 & 5 & 3 \end{matrix}$

Discussion

657.	Based on the data given in the table below, which of the following options would help us correctly plot the "less than" ogive? Weekly Wages (in Rupees)Number of Workers0−20820−402240−604760−801380−10010
Answer» Based on the data given in the table below, which of the following options would help us correctly plot the "less than" ogive? $\begin{matrix} W e e k l y W a g e s (i n R u p e e s) & N u m b e r o f W o r k e r s 0 - 20 & 8 20 - 40 & 22 40 - 60 & 47 60 - 80 & 13 80 - 100 & 10 \end{matrix}$

Discussion

658.	Graphic location of mode is done with reference to: (A) Cumulative frequency (B) Frequency Polygon (C) Frequency curve (D) Histogram
Answer» Graphic location of mode is done with reference to: (A) Cumulative frequency (B) Frequency Polygon (C) Frequency curve (D) Histogram

658.

Graphic location of mode is done with reference to: (A) Cumulative frequency (B) Frequency Polygon (C) Frequency curve (D) Histogram

Answer»

Graphic location of mode is done with reference to:

(A) Cumulative frequency

(B) Frequency Polygon

(C) Frequency curve

(D) Histogram

Discussion

659.	The graph of the modulus function is symmetric to the line
Answer» The graph of the modulus function is symmetric to the line

Discussion

660.	What is the rate of inflation for the year 2014 if the CPIs for the years 2013 and 2014 are 123 and 157 respectively?
Answer» What is the rate of inflation for the year 2014 if the CPIs for the years 2013 and 2014 are 123 and 157 respectively?

Discussion

661.	What do you mean by GDR?
Answer» What do you mean by GDR?

Discussion

662.	Find the median of the following data : Age greater than (in years)010203040506070No of persons23021820016512373288
Answer» Find the median of the following data : $\begin{matrix} Age greater than (in years) & 0 & 10 & 20 & 30 & 40 & 50 & 60 & 70 No of persons & 230 & 218 & 200 & 165 & 123 & 73 & 28 & 8 \end{matrix}$

662.

Find the median of the following data : Age greater than (in years)010203040506070No of persons23021820016512373288

Answer»

Find the median of the following data :

$\begin{matrix} Age greater than (in years) & 0 & 10 & 20 & 30 & 40 & 50 & 60 & 70 No of persons & 230 & 218 & 200 & 165 & 123 & 73 & 28 & 8 \end{matrix}$

Discussion

663.	Please answer guys,this one just stuck me when I was watching a lesson about it!!
Answer» Please answer guys,this one just stuck me when I was watching a lesson about it!!

Discussion

664.	Network externalities are prominent for which of these companies?
Answer» Network externalities are prominent for which of these companies?

Discussion

665.	Distinguish between primary and secondary data on the basis of the followings: (i) Originality (ii) Accuracy (iii) Suitability of objective
Answer» Distinguish between primary and secondary data on the basis of the followings: (i) Originality (ii) Accuracy (iii) Suitability of objective

665.

Distinguish between primary and secondary data on the basis of the followings: (i) Originality (ii) Accuracy (iii) Suitability of objective

Answer»

Distinguish between primary and secondary data on the basis of the followings:

(i) Originality (ii) Accuracy (iii) Suitability of objective

Discussion

666.	A survey was conducted on 20 families in a locality by a group of students .What will be the mode of the data? Age of family member0−2020−4040−6060−8080−100Number of students78221 Given that modal class is 20-40
Answer» A survey was conducted on 20 families in a locality by a group of students .What will be the mode of the data? $\begin{matrix} A g e o f f a m i l y m e m b e r & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 N u m b e r o f s t u d e n t s & 7 & 8 & 2 & 2 & 1 \end{matrix}$ Given that modal class is 20-40

666.

A survey was conducted on 20 families in a locality by a group of students .What will be the mode of the data? Age of family member0−2020−4040−6060−8080−100Number of students78221 Given that modal class is 20-40

Answer»

A survey was conducted on 20 families in a locality by a group of students .What will be the mode of the data?

$\begin{matrix} A g e o f f a m i l y m e m b e r & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 N u m b e r o f s t u d e n t s & 7 & 8 & 2 & 2 & 1 \end{matrix}$

Given that modal class is 20-40

Discussion

667.	Cumulative frequency curve is also known as a(an) ___.
Answer» Cumulative frequency curve is also known as a(an) ___.

Discussion

668.	Rearrange the sentences between (1) and (6) to form a meaningful paragraph. Input the order of sentences in the space provided. 1. Clinical trials have limitations beyond their exorbitant costs and the years or decades it takes them to provide meaningful results. A. Randomly subjecting thousands of individuals to second-hand tobacco smoke, pollutants or potentially noxious trans fats presents obvious ethical dilemmas. B. Clinical trials invariably enroll subjects who are relatively healthy, who are motivated to volunteer and will show up regularly for treatments and checkups. C. They can rarely be used, for instance, to study suspected harmful effects. D. And even when these trials are done to study the benefits of a particular intervention, it's rarely clear how the results apply to the public at large or to any specific patient. 6. Randomized trials are very good for showing that a drug does what the pharmaceutical company says it does but not very good for telling you how big the benefit really is and what are the harms in typical people. ___
Answer» Rearrange the sentences between (1) and (6) to form a meaningful paragraph. Input the order of sentences in the space provided. 1. Clinical trials have limitations beyond their exorbitant costs and the years or decades it takes them to provide meaningful results. A. Randomly subjecting thousands of individuals to second-hand tobacco smoke, pollutants or potentially noxious trans fats presents obvious ethical dilemmas. B. Clinical trials invariably enroll subjects who are relatively healthy, who are motivated to volunteer and will show up regularly for treatments and checkups. C. They can rarely be used, for instance, to study suspected harmful effects. D. And even when these trials are done to study the benefits of a particular intervention, it's rarely clear how the results apply to the public at large or to any specific patient. 6. Randomized trials are very good for showing that a drug does what the pharmaceutical company says it does but not very good for telling you how big the benefit really is and what are the harms in typical people. ___

Discussion

669.	There are 60 students in a class. The following is the frequency distribution of the marks obtained by the students in a test MarksFrequency0x−21x2x23(x+1)242x5x+1 Where x is positive integer. Then the variance of the marks is
Answer» There are $60$ students in a class. The following is the frequency distribution of the marks obtained by the students in a test $\begin{matrix} Marks & Frequency 0 & x - 2 1 & x 2 & x^{2} 3 & (x + 1)^{2} 4 & 2 x 5 & x + 1 \end{matrix}$ Where $x$ is positive integer. Then the variance of the marks is

Discussion

670.	Calculate the mean deviation about median for the following data X39101213F34524
Answer» Calculate the mean deviation about median for the following data $\begin{matrix} X & 3 & 9 & 10 & 12 & 13 F & 3 & 4 & 5 & 2 & 4 \end{matrix}$

670.

Calculate the mean deviation about median for the following data X39101213F34524

Answer»

Calculate the mean deviation about median for the following data

$\begin{matrix} X & 3 & 9 & 10 & 12 & 13 F & 3 & 4 & 5 & 2 & 4 \end{matrix}$

Discussion

671.	Which of the following methods give better results and why? (a) Census (b) Sample
Answer» Which of the following methods give better results and why? (a) Census (b) Sample

671.

Which of the following methods give better results and why? (a) Census (b) Sample

Answer»

Which of the following methods give better results and why?

(a) Census

(b) Sample

Discussion

672.	Describe the ways to refine the design of a report.
Answer» Describe the ways to refine the design of a report.

Discussion

673.	Identify the correct statement(s) about the line of best fit.
Answer» Identify the correct statement(s) about the line of best fit.

Discussion

674.	Data represented through a histogram can help in finding graphically the (a) mean (b) mode (c) median (d) all of these
Answer» Data represented through a histogram can help in finding graphically the (a) mean (b) mode (c) median (d) all of these

674.

Data represented through a histogram can help in finding graphically the (a) mean (b) mode (c) median (d) all of these

Answer»

Data represented through a histogram can help in finding graphically the

(a) mean (b) mode

(c) median (d) all of these

Discussion

675.	The following data gives the information on the observed lifetime (in hours) of 225 electrical components: Life time (in hours)0−2020−4040−6060−8080−100100−120Number of components103552613829 Determine the modal lifetimes of the components, given that the modal class is 60-80.
Answer» The following data gives the information on the observed lifetime (in hours) of 225 electrical components: $\begin{matrix} L i f e t i m e (i n h o u r s) & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 & 100 - 120 N u m b e r o f c o m p o n e n t s & 10 & 35 & 52 & 61 & 38 & 29 \end{matrix}$ Determine the modal lifetimes of the components, given that the modal class is 60-80.

Discussion

676.	What is random sampling?
Answer» What is random sampling?

Discussion

677.	Census of india conducted a survey on literacy in Bihar by sex and location and presented its report in the form of a table. The type of classification used in tabulation is termed as
Answer» Census of india conducted a survey on literacy in Bihar by sex and location and presented its report in the form of a table. The type of classification used in tabulation is termed as

Discussion

678.

If for some x∈R, the frequrency distribution of the marks obtained by 20 students in a test is : Marks 2 3 5 7 Frequency (x+1)2 2x−5 x2−3x x then the mean of the marks is :

Answer»

If for some $x \in R$ , the frequrency distribution of the marks obtained by $20$ students in a test is :

Marks	$2$	$3$	$5$	$7$
Frequency	$(x + 1)^{2}$	$2 x - 5$	$x^{2} - 3 x$	$x$

then the mean of the marks is :

Discussion

679.	Which of the following scenario(s) may lead to scarcity?
Answer» Which of the following scenario(s) may lead to scarcity?

Discussion

680.	Explain the meaning of opportunity cost with the help of a production possibility schedule.
Answer» Explain the meaning of opportunity cost with the help of a production possibility schedule.

Discussion

681.	The domain and range of the signum function is:
Answer» The domain and range of the signum function is:

Discussion

682.	Identify the type of classification of the below table. Hours of labourIncome (in 1000's of Rupees)12243648510
Answer» Identify the type of classification of the below table. $\begin{matrix} Hours of labour & Income (in 1000's of Rupees) 1 & 2 2 & 4 3 & 6 4 & 8 5 & 10 \end{matrix}$

Discussion

683.	In the previous question,calculate the relative measures of variation and indicate the value which,in your opinion,is more reliable.
Answer» In the previous question,calculate the relative measures of variation and indicate the value which,in your opinion,is more reliable.

Discussion

684.	What is a variable? Distinguish between a discrete and a continous variable.
Answer» What is a variable? Distinguish between a discrete and a continous variable.

Discussion

685.	Explain the concept of marginal opportunity cost using a numerical example.
Answer» Explain the concept of marginal opportunity cost using a numerical example.

Discussion

686.	If the salary of a person in the base year is Rs. 4000 per annum and the current year salary is Rs. 6000 by how much should his salary rise to maintain the same standard of living if the CPI is 400?
Answer» If the salary of a person in the base year is Rs. 4000 per annum and the current year salary is Rs. 6000 by how much should his salary rise to maintain the same standard of living if the CPI is 400?

Discussion

687.	Find the median of the following : Class Interval0−1010−3030−6060−8080−90Frequency5152583
Answer» Find the median of the following : $\begin{matrix} Class Interval & 0 - 10 & 10 - 30 & 30 - 60 & 60 - 80 & 80 - 90 Frequency & 5 & 15 & 25 & 8 & 3 \end{matrix}$

687.

Find the median of the following : Class Interval0−1010−3030−6060−8080−90Frequency5152583

Answer»

Find the median of the following :

$\begin{matrix} Class Interval & 0 - 10 & 10 - 30 & 30 - 60 & 60 - 80 & 80 - 90 Frequency & 5 & 15 & 25 & 8 & 3 \end{matrix}$

Discussion

688.	In which year will the next census be held in India? How is the census carried out?
Answer» In which year will the next census be held in India? How is the census carried out?

Discussion

689.	'Standard Deviation is independent of change of origin and change of scale.' Comment.
Answer» 'Standard Deviation is independent of change of origin and change of scale.' Comment.

Discussion

690.	If precisely measured data are available the simple correlation coefficient is (a) more accurate than rank correlation coefficient (b) less accurate than rank correlation coefficient (c) as accurate as the rank correlation coefficient
Answer» If precisely measured data are available the simple correlation coefficient is (a) more accurate than rank correlation coefficient (b) less accurate than rank correlation coefficient (c) as accurate as the rank correlation coefficient

690.

If precisely measured data are available the simple correlation coefficient is (a) more accurate than rank correlation coefficient (b) less accurate than rank correlation coefficient (c) as accurate as the rank correlation coefficient

Answer»

If precisely measured data are available the simple correlation coefficient is

(a) more accurate than rank correlation coefficient

(b) less accurate than rank correlation coefficient

(c) as accurate as the rank correlation coefficient

Discussion

691.	Q13. Consider the following statements about Ease of Doing Business Index: 1. Ease of Doing Business is an index of World Bank which inter alia refers to the dispute resolution environment in a country which facilitates the investors in deciding for setting up of and operation of a business. 2. India reached 100th ranked country in terms of ‘Ease of Doing Business’ amongst 190 countries. Which of the above are statements are correct?
Answer» Q13. Consider the following statements about Ease of Doing Business Index: 1. Ease of Doing Business is an index of World Bank which inter alia refers to the dispute resolution environment in a country which facilitates the investors in deciding for setting up of and operation of a business. 2. India reached 100th ranked country in terms of ‘Ease of Doing Business’ amongst 190 countries. Which of the above are statements are correct?

691.

Q13. Consider the following statements about Ease of Doing Business Index: 1. Ease of Doing Business is an index of World Bank which inter alia refers to the dispute resolution environment in a country which facilitates the investors in deciding for setting up of and operation of a business. 2. India reached 100th ranked country in terms of ‘Ease of Doing Business’ amongst 190 countries. Which of the above are statements are correct?

Answer»

Q13. Consider the following statements about Ease of Doing Business Index:

1. Ease of Doing Business is an index of World Bank which inter alia refers to the dispute resolution environment in a country which facilitates the investors in deciding for setting up of and operation of a business.

2. India reached 100th ranked country in terms of ‘Ease of Doing Business’ amongst 190 countries.

Which of the above are statements are correct?

Discussion

692.	The price per/kg of chicken and the quantity of chicken purchased per month in a household is tabulated below. Determine the type of correlation. Price/kg (Rs)Quantity (kg)406505.5603.5703307.5802
Answer» The price per/kg of chicken and the quantity of chicken purchased per month in a household is tabulated below. Determine the type of correlation. $\begin{matrix} P r i c e / k g (R s) & Q u a n t i t y (k g) 40 & 6 50 & 5.5 60 & 3.5 70 & 3 30 & 7.5 80 & 2 \end{matrix}$

Discussion

693.	The average ambient temperatures (in degrees Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31.0, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the range of the temperature for this duration.
Answer» The average ambient temperatures (in degrees Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31.0, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the range of the temperature for this duration.

Discussion

694.	Use the data given below that relate to monthly household expenditure (in Rs) on food of 50 households and answer the questions. 1904155917352760204116121753185544395090108518232346152312111360111021521183121813151105262827124248181212641183117110071180195311372048202515831324262136761397183219622177257512931365114632221396 (i) Obtain the range of monthly household expenditure on food. (ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.
Answer» Use the data given below that relate to monthly household expenditure (in Rs) on food of 50 households and answer the questions. $\begin{matrix} 1904 & 1559 & 1735 & 2760 & 2041 & 1612 1753 & 1855 & 4439 & 5090 & 1085 & 1823 & 2346 1523 & 1211 & 1360 & 1110 & 2152 & 1183 & 1218 1315 & 1105 & 2628 & 2712 & 4248 & 1812 & 1264 1183 & 1171 & 1007 & 1180 & 1953 & 1137 & 2048 2025 & 1583 & 1324 & 2621 & 3676 & 1397 & 1832 1962 & 2177 & 2575 & 1293 & 1365 & 1146 & 3222 1396 \end{matrix}$ (i) Obtain the range of monthly household expenditure on food. (ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

694.

Use the data given below that relate to monthly household expenditure (in Rs) on food of 50 households and answer the questions. 1904155917352760204116121753185544395090108518232346152312111360111021521183121813151105262827124248181212641183117110071180195311372048202515831324262136761397183219622177257512931365114632221396 (i) Obtain the range of monthly household expenditure on food. (ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

Answer»

Use the data given below that relate to monthly household expenditure (in Rs) on food of 50 households and answer the questions.

$\begin{matrix} 1904 & 1559 & 1735 & 2760 & 2041 & 1612 1753 & 1855 & 4439 & 5090 & 1085 & 1823 & 2346 1523 & 1211 & 1360 & 1110 & 2152 & 1183 & 1218 1315 & 1105 & 2628 & 2712 & 4248 & 1812 & 1264 1183 & 1171 & 1007 & 1180 & 1953 & 1137 & 2048 2025 & 1583 & 1324 & 2621 & 3676 & 1397 & 1832 1962 & 2177 & 2575 & 1293 & 1365 & 1146 & 3222 1396 \end{matrix}$

(i) Obtain the range of monthly household expenditure on food.

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

Discussion

695.	The ages and weights of 5 children are given below. Calculate covariance. Age, X)Weight, Y720925113613411548
Answer» The ages and weights of 5 children are given below. Calculate covariance. $\begin{matrix} Age, X) & Weight, Y 7 & 20 9 & 25 11 & 36 13 & 41 15 & 48 \end{matrix}$

695.

The ages and weights of 5 children are given below. Calculate covariance. Age, X)Weight, Y720925113613411548

Answer»

The ages and weights of 5 children are given below. Calculate covariance.

$\begin{matrix} Age, X) & Weight, Y 7 & 20 9 & 25 11 & 36 13 & 41 15 & 48 \end{matrix}$

Discussion

696.	(I) The SENSEX is a free-float market-weighted stock market of 30 well established and financially sound companies listed on Bombay stock exchange. (II) The NIFTY 50 is NSE’s benchmark broad based stock market index for the Indian equity market. It represents the simple average of 50 Indian company stocks in 12 sectors.
Answer» (I) The SENSEX is a free-float market-weighted stock market of 30 well established and financially sound companies listed on Bombay stock exchange. (II) The NIFTY 50 is NSE’s benchmark broad based stock market index for the Indian equity market. It represents the simple average of 50 Indian company stocks in 12 sectors.

Discussion

697.	The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 80th percentile.
Answer» The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 80th percentile.

Discussion

698.	Where are sampling errors usually present? Are they present in a census survey?
Answer» Where are sampling errors usually present? Are they present in a census survey?

Discussion

699.	Mention the main types of statistical series on the basis of characteristics.
Answer» Mention the main types of statistical series on the basis of characteristics.

Discussion

700.	The inflation rate of a country follows a certain trend given by I=IX+IX−1+IX−2 where [IX]=0,[IX−1]=1 and [IX−2]=2, [ ] represents greatest integer function. Find the range of the inflation rate.
Answer» The inflation rate of a country follows a certain trend given by $I = I_{X} + I_{X - 1} + I_{X - 2}$ where $[I_{X}] = 0, [I_{X - 1}] = 1$ and $[I_{X - 2}] = 2$ , [ ] represents greatest integer function. Find the range of the inflation rate.

Discussion

Explore topic-wise InterviewSolutions in .

The quantity of goods supplied by a firm at different price points is given in the table below. Find the correlation coefficeint between price and quantity supplied. Price (X)Quantity (Y)620825103016352040

Histogram and column diagram are the same method of presentation of data. (True / False)

List the demerits of random sampling.

The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 1st quartile.

Which of the following representations is right using tally marks? A) B) C)

Calculate the mean and variance the data given below: Daily Wages0−1010−2020−3030−4040−50Number of Workers271053

Based on the data given in the table below, which of the following options would help us correctly plot the "less than" ogive? Weekly Wages (in Rupees)Number of Workers0−20820−402240−604760−801380−10010

Graphic location of mode is done with reference to: (A) Cumulative frequency (B) Frequency Polygon (C) Frequency curve (D) Histogram

The graph of the modulus function is symmetric to the line

What is the rate of inflation for the year 2014 if the CPIs for the years 2013 and 2014 are 123 and 157 respectively?

What do you mean by GDR?

Find the median of the following data : Age greater than (in years)010203040506070No of persons23021820016512373288

Please answer guys,this one just stuck me when I was watching a lesson about it!!

Network externalities are prominent for which of these companies?

Distinguish between primary and secondary data on the basis of the followings: (i) Originality (ii) Accuracy (iii) Suitability of objective

A survey was conducted on 20 families in a locality by a group of students .What will be the mode of the data? Age of family member0−2020−4040−6060−8080−100Number of students78221 Given that modal class is 20-40

Cumulative frequency curve is also known as a(an) ___.

There are 60 students in a class. The following is the frequency distribution of the marks obtained by the students in a test MarksFrequency0x−21x2x23(x+1)242x5x+1 Where x is positive integer. Then the variance of the marks is

Calculate the mean deviation about median for the following data X39101213F34524

Which of the following methods give better results and why? (a) Census (b) Sample

Describe the ways to refine the design of a report.

Identify the correct statement(s) about the line of best fit.

Data represented through a histogram can help in finding graphically the (a) mean (b) mode (c) median (d) all of these

The following data gives the information on the observed lifetime (in hours) of 225 electrical components: Life time (in hours)0−2020−4040−6060−8080−100100−120Number of components103552613829 Determine the modal lifetimes of the components, given that the modal class is 60-80.

What is random sampling?

Census of india conducted a survey on literacy in Bihar by sex and location and presented its report in the form of a table. The type of classification used in tabulation is termed as

If for some x∈R, the frequrency distribution of the marks obtained by 20 students in a test is : Marks 2 3 5 7 Frequency (x+1)2 2x−5 x2−3x x then the mean of the marks is :

Which of the following scenario(s) may lead to scarcity?

Explain the meaning of opportunity cost with the help of a production possibility schedule.

The domain and range of the signum function is:

Identify the type of classification of the below table. Hours of labourIncome (in 1000's of Rupees)12243648510

In the previous question,calculate the relative measures of variation and indicate the value which,in your opinion,is more reliable.

What is a variable? Distinguish between a discrete and a continous variable.

Explain the concept of marginal opportunity cost using a numerical example.

If the salary of a person in the base year is Rs. 4000 per annum and the current year salary is Rs. 6000 by how much should his salary rise to maintain the same standard of living if the CPI is 400?

Find the median of the following : Class Interval0−1010−3030−6060−8080−90Frequency5152583

In which year will the next census be held in India? How is the census carried out?

'Standard Deviation is independent of change of origin and change of scale.' Comment.

If precisely measured data are available the simple correlation coefficient is (a) more accurate than rank correlation coefficient (b) less accurate than rank correlation coefficient (c) as accurate as the rank correlation coefficient

The price per/kg of chicken and the quantity of chicken purchased per month in a household is tabulated below. Determine the type of correlation. Price/kg (Rs)Quantity (kg)406505.5603.5703307.5802

The average ambient temperatures (in degrees Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31.0, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the range of the temperature for this duration.

The ages and weights of 5 children are given below. Calculate covariance. Age, X)Weight, Y720925113613411548

The average ambient temperatures (in degree Celsius) for a region for 15 years from 2001-2015 is given below. 26.3, 29.7, 31, 29.8, 26.8, 27.6, 27.4, 27.0, 27.6, 27.8, 30.0, 32.0, 28.9, 30.5, 29.5 Find the temperature corresponding to the 80th percentile.

Where are sampling errors usually present? Are they present in a census survey?

Mention the main types of statistical series on the basis of characteristics.

The inflation rate of a country follows a certain trend given by I=IX+IX−1+IX−2 where [IX]=0,[IX−1]=1 and [IX−2]=2, [ ] represents greatest integer function. Find the range of the inflation rate.