• +91 9971497814
  • info@interviewmaterial.com

Statistics Ex-14.3 Interview Questions Answers

Question 1 : The following frequency distribution gives the monthly consumption of an electricity of 68 consumers in a locality.

Answer 1 :

 Find the median, mean and mode of the data and comparethem.

Monthly consumption(in units)

No. of customers

65-85

4

85-105

5

105-125

13

125-145

20

145-165

14

165-185

8

185-205

4




Question 2 : If the median of a distribution given below is 28.5 then, find the value of x & y.

Answer 2 :


Class Interval

Frequency

0-10

5

10-20

x

20-30

20

30-40

15

40-50

y

50-60

5

Total

60

Question 3 : The Life insurance agent found the following data for the distribution of ages of 100 policy holders.

Answer 3 :

 Calculate the median age, if policies are given only tothe persons whose age is 18 years onwards but less than the 60 years.

Age (in years)

Number of policy holder

Below 20

2

Below 25

6

Below 30

24

Below 35

45

Below 40

78

Below 45

89

Below 50

92

Below 55

98

Below 60

100