1173 + Interview Questions in Statistics Page 4 InterviewSolution

151.	The number of companies listed on National Stock Exchange(NSE) are _____.
Answer» The number of companies listed on National Stock Exchange(NSE) are _____.

Discussion

152.

Represent the following data in the form of a histogram: Mid-point 115 125 135 145 155 165 175 185 195 Size 6 55 48 72 116 60 38 22 3

Answer» Represent the following data in the form of a histogram:

Mid-point	115	125	135	145	155	165	175	185	195
Size	6	55	48	72	116	60	38	22	3

Discussion

153.	38. In a survey it was found that 38% people like watching Football, 75% like watching Cricket and x% like both. Then find the value/range of x.
Answer» 38. In a survey it was found that 38% people like watching Football, 75% like watching Cricket and x% like both. Then find the value/range of x.

Discussion

154.	Find the coefficient of Rank Correlation : Marks in Statistics1510202812101618N= 8Marks in Economics1614101211151820N= 8
Answer» Find the coefficient of Rank Correlation : $\begin{matrix} Marks in Statistics & 15 & 10 & 20 & 28 & 12 & 10 & 16 & 18 & N= 8 Marks in Economics & 16 & 14 & 10 & 12 & 11 & 15 & 18 & 20 & N= 8 \end{matrix}$

154.

Find the coefficient of Rank Correlation : Marks in Statistics1510202812101618N= 8Marks in Economics1614101211151820N= 8

Answer»

Find the coefficient of Rank Correlation :

$\begin{matrix} Marks in Statistics & 15 & 10 & 20 & 28 & 12 & 10 & 16 & 18 & N= 8 Marks in Economics & 16 & 14 & 10 & 12 & 11 & 15 & 18 & 20 & N= 8 \end{matrix}$

Discussion

155.	Why is slope equal to infinity not possible in physics and possible in maths?
Answer» Why is slope equal to infinity not possible in physics and possible in maths?

Discussion

156.	Define mnemonics? Suggest a plan to improve your own memory.
Answer» Define mnemonics? Suggest a plan to improve your own memory.

Discussion

157.	find the mean of first five even number
Answer» find the mean of first five even number

Discussion

158.

(i) Construct a histogram and frequency polygon of the following distribution: Marks 0−10 10−20 20−30 30−40 40−50 Number of Students 8 18 35 25 14 (ii) Show that the area under frequency polygon is equal to the area under histogram.

Answer» (i) Construct a histogram and frequency polygon of the following distribution:

Marks	0−10	10−20	20−30	30−40	40−50
Number of Students	8	18	35	25	14

(ii) Show that the area under frequency polygon is equal to the area under histogram.

Discussion

159.	Statement:As the day for result declaration for board exams closes by, the students awaiting their result start feeling the heat. Assumptions: I. Anxiety levels are more during board exams than any other exam. II. Some students are more anxious than other students.
Answer» Statement:As the day for result declaration for board exams closes by, the students awaiting their result start feeling the heat. Assumptions: I. Anxiety levels are more during board exams than any other exam. II. Some students are more anxious than other students.

Discussion

160.

Construct histogram, frequency polygon and frequency curve from the following data: Marks Obtained 0−10 10−20 20−30 30−40 40−50 50−60 60−70 70−80 Number of Students 10 16 20 20 22 15 8 5

Answer» Construct histogram, frequency polygon and frequency curve from the following data:

Marks Obtained	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80
Number of Students	10	16	20	20	22	15	8	5

Discussion

161.	What are the merits and demerits of the scatter diagram?
Answer» What are the merits and demerits of the scatter diagram?

Discussion

162.	Which of the following intervals are subsets of the interval [−3,7)
Answer» Which of the following intervals are subsets of the interval $[- 3, 7)$

Discussion

163.

Weight of 15 persons is as follows: Weight (kg) 20 28 34 39 42 50 53 54 59 64 72 74 74 78 79 Find out mean weight, using Direct Method as well as Short-cut Method.

Answer» Weight of 15 persons is as follows:

Weight (kg)

20

28

34

39

42

50

53

54

59

64

72

74

78

79

Find out mean weight, using Direct Method as well as Short-cut Method.

Discussion

164.	Explain various functions of statistics.
Answer» Explain various functions of statistics.

Discussion

165.	What is so special
Answer» What is so special

Discussion

166.	The data in which every value obtained is a number is known as .
Answer» The data in which every value obtained is a number is known as .

Discussion

167.

Calculate mode from the following data: Wages 25 50 75 80 85 90 Number of Workers 4 6 9 3 2 1

Answer» Calculate mode from the following data:

Wages	25	50	75	80	85	90
Number of Workers	4	6	9	3	2	1

Discussion

168.	What are some of the things that ethnographers and sociologists do during participant observation?
Answer» What are some of the things that ethnographers and sociologists do during participant observation?

Discussion

169.	find the coefficient of variation and variance of the following distribution. under 10 years = 15 , under 20 years = 30 , under 30 years =53 , under 40 years = 75 , under 50 years=100 , under 60 years= 110 , under 70 years = 115 , under 80 years=125
Answer» find the coefficient of variation and variance of the following distribution. under 10 years = 15 , under 20 years = 30 , under 30 years =53 , under 40 years = 75 , under 50 years=100 , under 60 years= 110 , under 70 years = 115 , under 80 years=125

Discussion

170.	Name two agencies at the national level which collect, process and tabulate statistical data.
Answer» Name two agencies at the national level which collect, process and tabulate statistical data.

Discussion

171.	Convert the below table into an exclusive series MarksFrequency10−14415−19520−24625−29330−349
Answer» Convert the below table into an exclusive series $\begin{matrix} M a r k s & F r e q u e n c y 10 - 14 & 4 15 - 19 & 5 20 - 24 & 6 25 - 29 & 3 30 - 34 & 9 \end{matrix}$

Discussion

172.	Calculate Laspeyre's and Paasche's price index number on the basis of the following data: CommodityABCDEBase Year Price (p0)1025301520Curreny Year Price (p1)1540453025Base Year Quantity (q0)61015208Current Year Quantity (q1)82012156
Answer» Calculate Laspeyre's and Paasche's price index number on the basis of the following data: $\begin{matrix} Commodity & A & B & C & D & E Base Year Price (p_{0}) & 10 & 25 & 30 & 15 & 20 Curreny Year Price (p_{1}) & 15 & 40 & 45 & 30 & 25 Base Year Quantity (q_{0}) & 6 & 10 & 15 & 20 & 8 Current Year Quantity (q_{1}) & 8 & 20 & 12 & 15 & 6 \end{matrix}$

172.

Calculate Laspeyre's and Paasche's price index number on the basis of the following data: CommodityABCDEBase Year Price (p0)1025301520Curreny Year Price (p1)1540453025Base Year Quantity (q0)61015208Current Year Quantity (q1)82012156

Answer»

Calculate Laspeyre's and Paasche's price index number on the basis of the following data:

$\begin{matrix} Commodity & A & B & C & D & E Base Year Price (p_{0}) & 10 & 25 & 30 & 15 & 20 Curreny Year Price (p_{1}) & 15 & 40 & 45 & 30 & 25 Base Year Quantity (q_{0}) & 6 & 10 & 15 & 20 & 8 Current Year Quantity (q_{1}) & 8 & 20 & 12 & 15 & 6 \end{matrix}$

Discussion

173.

In a beauty contest, three judges accorded following ranks to 10 participants: Judge I 1 6 5 10 3 2 4 9 7 8 Judge II 3 5 8 4 7 10 2 1 6 9 Judge III 6 4 9 8 1 2 3 10 5 7 Find out by Spearman's Rank Difference Method which pair of judges has a common taste in respect of beauty.

Answer» In a beauty contest, three judges accorded following ranks to 10 participants:

Judge I	1	6	5	10	3	2	4	9	7	8
Judge II	3	5	8	4	7	10	2	1	6	9
Judge III	6	4	9	8	1	2	3	10	5	7

Find out by Spearman's Rank Difference Method which pair of judges has a common taste in respect of beauty.

Discussion

174.

Calculate range, standard deviation and coefficient of variation of marks secured by students. 50 55 57 49 54 61 64 59 58 56

Answer» Calculate range, standard deviation and coefficient of variation of marks secured by students.

50

55

57

49

54

61

64

59

58

56

Discussion

175.	HOW TO Do dIFFERENTIATION AND INTEGRATION
Answer» HOW TO Do dIFFERENTIATION AND INTEGRATION

Discussion

176.	Find the median for the following frequency distribution.Age in yearsNumber of people1531681710181019520417
Answer» Find the median for the following frequency distribution. $\begin{matrix} A g e i n y e a r s & N u m b e r o f p e o p l e 15 & 3 16 & 8 17 & 10 18 & 10 19 & 5 20 & 4 \end{matrix}$ 17

Discussion

177.	Prove that pie is irrational no.
Answer» Prove that pie is irrational no.

Discussion

178.	Frame at least four appropriate multiple choice options for following questions (i) Which of the following is the most important when you buy a new dress? (ii) How often do you use computers? (iii) Which of the newspapers do you read regularly? (iv) Rise in the price of petrol is justified. (v) What is the monthly income of your family?
Answer» Frame at least four appropriate multiple choice options for following questions (i) Which of the following is the most important when you buy a new dress? (ii) How often do you use computers? (iii) Which of the newspapers do you read regularly? (iv) Rise in the price of petrol is justified. (v) What is the monthly income of your family?

178.

Frame at least four appropriate multiple choice options for following questions (i) Which of the following is the most important when you buy a new dress? (ii) How often do you use computers? (iii) Which of the newspapers do you read regularly? (iv) Rise in the price of petrol is justified. (v) What is the monthly income of your family?

Answer»

Frame at least four appropriate multiple choice options for following questions

(i) Which of the following is the most important when you buy a new dress?

(ii) How often do you use computers?

(iii) Which of the newspapers do you read regularly?

(iv) Rise in the price of petrol is justified.

(v) What is the monthly income of your family?

Discussion

179.	Read the information and answer the given question : PQ means P is the father of Q P+Q means P is the husband of Q P$Q means P is the brother of Q P%Q means P is the mother of Q P&Q means P is the sister of Q Which among the following options is true if the expression ‘A+B&CD%E$F’ is definitely true ?
Answer» Read the information and answer the given question : PQ means P is the father of Q P+Q means P is the husband of Q P$Q means P is the brother of Q P%Q means P is the mother of Q P&Q means P is the sister of Q Which among the following options is true if the expression ‘A+B&CD%E$F’ is definitely true ?

Discussion

180.	In a poem recitation competition, ten participants were recorded following marks by two different judges X and Y. X1517141311121618109Y1512467931025 Calculate the coefficient of rank correlation.
Answer» In a poem recitation competition, ten participants were recorded following marks by two different judges X and Y. $\begin{matrix} X & 15 & 17 & 14 & 13 & 11 & 12 & 16 & 18 & 10 & 9 Y & 15 & 12 & 4 & 6 & 7 & 9 & 3 & 10 & 2 & 5 \end{matrix}$ Calculate the coefficient of rank correlation.

Discussion

181.	Find out the price index of the year 2008, assuming 2006 as the base year of the following data by using simple average of price relatives method: CommodityPrice in the year,2006Price in the year,2008(Rs) Per Qtl.(Rs) Per Qtl.Wheat800900Sugar11001200Rice 400 600Potato 500 700Salt 300 500
Answer» Find out the price index of the year 2008, assuming 2006 as the base year of the following data by using simple average of price relatives method: $\begin{matrix} Commodity & Price in the year,2006 & Price in the year,2008 (Rs) Per Qtl. & (Rs) Per Qtl. Wheat & 800 & 900 Sugar & 1100 & 1200 Rice & 400 & 600 Potato & 500 & 700 Salt & 300 & 500 \end{matrix}$

181.

Find out the price index of the year 2008, assuming 2006 as the base year of the following data by using simple average of price relatives method: CommodityPrice in the year,2006Price in the year,2008(Rs) Per Qtl.(Rs) Per Qtl.Wheat800900Sugar11001200Rice 400 600Potato 500 700Salt 300 500

Answer»

Find out the price index of the year 2008, assuming 2006 as the base year of the following data by using simple average of price relatives method:

$\begin{matrix} Commodity & Price in the year,2006 & Price in the year,2008 (Rs) Per Qtl. & (Rs) Per Qtl. Wheat & 800 & 900 Sugar & 1100 & 1200 Rice & 400 & 600 Potato & 500 & 700 Salt & 300 & 500 \end{matrix}$

Discussion

182.	Consumer preferences are monotonic means : (a) Cconsumer prefers less of both the goods (b) Consumer prefers more of both the goods (c) Consumer prefers more of at least one of the goods (d) Both B and C
Answer» Consumer preferences are monotonic means : (a) Cconsumer prefers less of both the goods (b) Consumer prefers more of both the goods (c) Consumer prefers more of at least one of the goods (d) Both B and C

182.

Consumer preferences are monotonic means : (a) Cconsumer prefers less of both the goods (b) Consumer prefers more of both the goods (c) Consumer prefers more of at least one of the goods (d) Both B and C

Answer»

Consumer preferences are monotonic means :

(a) Cconsumer prefers less of both the goods

(b) Consumer prefers more of both the goods

(c) Consumer prefers more of at least one of the goods

(d) Both B and C

Discussion

183.	Given that C5=F-329 is the relation between temperature in ∘C and ∘F. The standard deviation of some temperature data in ∘C is 5. If the data were converted in ∘F, the variance would be (a) 81 (b) 57 (c) 36 (d) 25
Answer» Given that $\frac{C}{5} = \frac{F - 32}{9}$ is the relation between temperature in ^∘C and ^∘F. The standard deviation of some temperature data in ^∘C is 5. If the data were converted in ^∘F, the variance would be (a) 81 (b) 57 (c) 36 (d) 25

Discussion

184.	Distinguish between Laspeyre's and Paasche's index.
Answer» Distinguish between Laspeyre's and Paasche's index.

Discussion

185.	Define classification.
Answer» Define classification.

Discussion

186.	The data points in the figure below represent monthly income and expenditure data of individual members of the Ahuja family the Bose family the Coomar family and the Dubey family. For these questions, savings is defined as Savings=Income-Expenditure. Which family has the lowest average income?
Answer» The data points in the figure below represent monthly income and expenditure data of individual members of the Ahuja family the Bose family the Coomar family and the Dubey family. For these questions, savings is defined as Savings=Income-Expenditure. Which family has the lowest average income?

Discussion

187.	Mean is also called as ___.
Answer» Mean is also called as ___.

Discussion

188.	Discuss the role of Statistics in economic planning.
Answer» Discuss the role of Statistics in economic planning.

Discussion

189.	Explain the procedures for studying verbal learning.
Answer» Explain the procedures for studying verbal learning.

Discussion

190.	The following table gives the marginal product schedule of labour. It is given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour : L123456MPL357531
Answer» The following table gives the marginal product schedule of labour. It is given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour : $\begin{matrix} L & 1 & 2 & 3 & 4 & 5 & 6 M P_{L} & 3 & 5 & 7 & 5 & 3 & 1 \end{matrix}$

190.

The following table gives the marginal product schedule of labour. It is given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour : L123456MPL357531

Answer»

The following table gives the marginal product schedule of labour. It is given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour :

$\begin{matrix} L & 1 & 2 & 3 & 4 & 5 & 6 M P_{L} & 3 & 5 & 7 & 5 & 3 & 1 \end{matrix}$

Discussion

191.	Statistical calculations in classified data are based on (a) the actual values of observations (b) the upper class limits (c) the lower class limits (d) the class midpoints
Answer» Statistical calculations in classified data are based on (a) the actual values of observations (b) the upper class limits (c) the lower class limits (d) the class midpoints

191.

Statistical calculations in classified data are based on (a) the actual values of observations (b) the upper class limits (c) the lower class limits (d) the class midpoints

Answer»

Statistical calculations in classified data are based on

(a) the actual values of observations

(b) the upper class limits

(c) the lower class limits

(d) the class midpoints

Discussion

192.

From the following data, determine Karl Pearson's coefficient of correlation between X and Y series for 15 paris: X-Series Y-Series Mean 80 120 Sum of Squares of deviation from Arithmetic Mean 56 156 Sum of product of deviation of X and Y from their respective Means 92

Answer» From the following data, determine Karl Pearson's coefficient of correlation between X and Y series for 15 paris:

	X-Series	Y-Series
Mean	80	120
Sum of Squares of deviation from Arithmetic Mean	56	156
Sum of product of deviation of X and Y from their respective Means	92

Discussion

193.	A physical quantity is represented by X= [M^a l^b T^c] if percentage error in the measurement of M, L,T, are alpha % beta% and gama% respectively then maximum percentage error in measurement should be ?
Answer» A physical quantity is represented by X= [M^a l^b T^c] if percentage error in the measurement of M, L,T, are alpha % beta% and gama% respectively then maximum percentage error in measurement should be ?

Discussion

194.

The runs scored by the batsmen of India and Srilanka in a series is recorded below. Find the mean deviation about mean for the scores of the batsmen. Score0−1010−2020−3030−4040−5050−60number of innings12182720176

Answer»

The runs scored by the batsmen of India and Srilanka in a series is recorded below. Find the mean deviation about mean for the scores of the batsmen.

$\begin{matrix} S c o r e & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 n u m b e r o f i n n i n g s & 12 & 18 & 27 & 20 & 17 & 6 \end{matrix}$

Discussion

195.	Pocket allowance of 5 students respectively are:125, 75, 150, 175, 200Find out arithmetic mean.
Answer» Pocket allowance of 5 students respectively are: 125, 75, 150, 175, 200 Find out arithmetic mean.

Discussion

196.	the dominant colour in the poem
Answer» the dominant colour in the poem

Discussion

197.	The points scored by three friends in a game are shown in the given bar graph. Draw the corresponding pie chart for the bar graph.
Answer» The points scored by three friends in a game are shown in the given bar graph. Draw the corresponding pie chart for the bar graph.

Discussion

198.	The mean and standard deviation of six observations are 8 and 4 respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations
Answer» The mean and standard deviation of six observations are 8 and 4 respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

Discussion

199.

Draw 'less than' and 'more than' ogive curves from the following data: Marks 0−5 5−10 10−15 15−20 20−25 25−30 30−35 35−40 Number of Students 7 10 20 13 12 19 14 9

Answer» Draw 'less than' and 'more than' ogive curves from the following data:

Marks	0−5	5−10	10−15	15−20	20−25	25−30	30−35	35−40
Number of Students	7	10	20	13	12	19	14	9

Discussion

200.	Five students A, B, C, D and E have scored the following marks in Economics and Statistics. Find the rank coefficient of their marks. StudentStatistics (S)Economics (E)A7590B6360C9088D8280E5875
Answer» Five students A, B, C, D and E have scored the following marks in Economics and Statistics. Find the rank coefficient of their marks. $\begin{matrix} S t u d e n t & S t a t i s t i c s (S) & E c o n o m i c s (E) A & 75 & 90 B & 63 & 60 C & 90 & 88 D & 82 & 80 E & 58 & 75 \end{matrix}$

Discussion

Explore topic-wise InterviewSolutions in .

The number of companies listed on National Stock Exchange(NSE) are _____.

Represent the following data in the form of a histogram: Mid-point 115 125 135 145 155 165 175 185 195 Size 6 55 48 72 116 60 38 22 3

38. In a survey it was found that 38% people like watching Football, 75% like watching Cricket and x% like both. Then find the value/range of x.

Find the coefficient of Rank Correlation : Marks in Statistics1510202812101618N= 8Marks in Economics1614101211151820N= 8

Why is slope equal to infinity not possible in physics and possible in maths?

Define mnemonics? Suggest a plan to improve your own memory.

find the mean of first five even number

(i) Construct a histogram and frequency polygon of the following distribution: Marks 0−10 10−20 20−30 30−40 40−50 Number of Students 8 18 35 25 14 (ii) Show that the area under frequency polygon is equal to the area under histogram.

Statement:As the day for result declaration for board exams closes by, the students awaiting their result start feeling the heat. Assumptions: I. Anxiety levels are more during board exams than any other exam. II. Some students are more anxious than other students.

Construct histogram, frequency polygon and frequency curve from the following data: Marks Obtained 0−10 10−20 20−30 30−40 40−50 50−60 60−70 70−80 Number of Students 10 16 20 20 22 15 8 5

What are the merits and demerits of the scatter diagram?

Which of the following intervals are subsets of the interval [−3,7)

Weight of 15 persons is as follows: Weight (kg) 20 28 34 39 42 50 53 54 59 64 72 74 74 78 79 Find out mean weight, using Direct Method as well as Short-cut Method.

Explain various functions of statistics.

What is so special

The data in which every value obtained is a number is known as .

Calculate mode from the following data: Wages 25 50 75 80 85 90 Number of Workers 4 6 9 3 2 1

What are some of the things that ethnographers and sociologists do during participant observation?

find the coefficient of variation and variance of the following distribution. under 10 years = 15 , under 20 years = 30 , under 30 years =53 , under 40 years = 75 , under 50 years=100 , under 60 years= 110 , under 70 years = 115 , under 80 years=125

Name two agencies at the national level which collect, process and tabulate statistical data.

Convert the below table into an exclusive series MarksFrequency10−14415−19520−24625−29330−349

Calculate Laspeyre's and Paasche's price index number on the basis of the following data: CommodityABCDEBase Year Price (p0)1025301520Curreny Year Price (p1)1540453025Base Year Quantity (q0)61015208Current Year Quantity (q1)82012156

In a beauty contest, three judges accorded following ranks to 10 participants: Judge I 1 6 5 10 3 2 4 9 7 8 Judge II 3 5 8 4 7 10 2 1 6 9 Judge III 6 4 9 8 1 2 3 10 5 7 Find out by Spearman's Rank Difference Method which pair of judges has a common taste in respect of beauty.

Calculate range, standard deviation and coefficient of variation of marks secured by students. 50 55 57 49 54 61 64 59 58 56

HOW TO Do dIFFERENTIATION AND INTEGRATION

Find the median for the following frequency distribution.Age in yearsNumber of people1531681710181019520417

Prove that pie is irrational no.

In a poem recitation competition, ten participants were recorded following marks by two different judges X and Y. X1517141311121618109Y1512467931025 Calculate the coefficient of rank correlation.

Find out the price index of the year 2008, assuming 2006 as the base year of the following data by using simple average of price relatives method: CommodityPrice in the year,2006Price in the year,2008(Rs) Per Qtl.(Rs) Per Qtl.Wheat800900Sugar11001200Rice 400 600Potato 500 700Salt 300 500

Consumer preferences are monotonic means : (a) Cconsumer prefers less of both the goods (b) Consumer prefers more of both the goods (c) Consumer prefers more of at least one of the goods (d) Both B and C

Given that C5=F-329 is the relation between temperature in ∘C and ∘F. The standard deviation of some temperature data in ∘C is 5. If the data were converted in ∘F, the variance would be (a) 81 (b) 57 (c) 36 (d) 25

Distinguish between Laspeyre's and Paasche's index.

Define classification.

The data points in the figure below represent monthly income and expenditure data of individual members of the Ahuja family the Bose family the Coomar family and the Dubey family. For these questions, savings is defined as Savings=Income-Expenditure. Which family has the lowest average income?

Mean is also called as ___.

Discuss the role of Statistics in economic planning.

Explain the procedures for studying verbal learning.

The following table gives the marginal product schedule of labour. It is given that total product of labour is zero at zero level of employment. Calculate the total and average product schedules of labour : L123456MPL357531

Statistical calculations in classified data are based on (a) the actual values of observations (b) the upper class limits (c) the lower class limits (d) the class midpoints

From the following data, determine Karl Pearson's coefficient of correlation between X and Y series for 15 paris: X-Series Y-Series Mean 80 120 Sum of Squares of deviation from Arithmetic Mean 56 156 Sum of product of deviation of X and Y from their respective Means 92

A physical quantity is represented by X= [M^a l^b T^c] if percentage error in the measurement of M, L,T, are alpha % beta% and gama% respectively then maximum percentage error in measurement should be ?

The runs scored by the batsmen of India and Srilanka in a series is recorded below. Find the mean deviation about mean for the scores of the batsmen. Score0−1010−2020−3030−4040−5050−60number of innings12182720176

Pocket allowance of 5 students respectively are:125, 75, 150, 175, 200Find out arithmetic mean.

the dominant colour in the poem

The points scored by three friends in a game are shown in the given bar graph. Draw the corresponding pie chart for the bar graph.

The mean and standard deviation of six observations are 8 and 4 respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

Draw 'less than' and 'more than' ogive curves from the following data: Marks 0−5 5−10 10−15 15−20 20−25 25−30 30−35 35−40 Number of Students 7 10 20 13 12 19 14 9

Five students A, B, C, D and E have scored the following marks in Economics and Statistics. Find the rank coefficient of their marks. StudentStatistics (S)Economics (E)A7590B6360C9088D8280E5875