CBSE Class 10 Mathematics Statistics Worksheet Set D

STATISTICS

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1.The empirical relationship between the three measures of central tendency is…………………

2. …………………. Is called a positional average.

3. The point of intersection of the less than ogive and the more than ogive gives us the ……………..

4.The point of intersection of the less than ogive and the more than ogive is (36.5,15).The median is………

5.The median and the mode of a data are 62 and 64 respectively. The mean is………..

6. The median and the mean of a data are 52 and 50 respectively. The mode is………..

7. The mean and the mode of a data are 54 and 57 respectively. The median is………..

8.Change the following data to a frequency distribution table:

Less than 10

Less than 20

Less than 30

Less than 40

Less than 50

Less than 60

Less than 70

Less than 80

7

16

23

32

42

53

60

75

9. Change the following data to a frequency distribution table:

0 and above

10 and above

20 and above

30 and above

40 and above

50 and above

60 and above

70 and above

100

92

87

75

52

28

16

4

10. The mean of the following data is 38.2. Find the missing frequencies f1 and f2 if the total frequency is 50.

Classes

0-10

10-20

20-30

30-40

40-50

50-60

60-70

Frequency

4

4

F1

10

F2

8

5

(Ans. F1 = 7,f2=12)

11.The mean of the following frequency is 8. Find the value of p.

X(variable)

3

5

7

9

11

13

F(frequency)

6

8

15

P

8

4

(Ans p= 25)

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