Page 209 - Maths Skills - 7

Data Handling 207

HOTS

1. Two batsman scored the following runs in 9 innings:

Sameer 45 47 12 82 50 60 13 57 93

Sachin 55 90 3 0 108 75 54 37 73

(i) Which player has a better average?

(ii) Which player has a greater median score?

2. The blood pressure of patients coming to a Government hospital are as under:

160, 130, 142, 150, 135, 190, 142, 160, 142, 174, 142, 158, 150, 160, 142, 142, 130, 158, 160, 174.
For the above data, evaluate the:

(i) mean
(ii) median

(iii) mode

3. Following are the choices of refreshment of 36 students of Class VII on a picnic outing:
Juice, ice-cream, chocolate, ice-cream, cold drinks, ice-cream, chocolate, coffee, coffee, chocolate, ice-cream,
chocolate, cold drink, ice-cream, cold drink, coffee, ice-cream, chocolate, ice-cream, cold drink, ice-cream,
cold drink, ice-cream, juice, cold drink, chocolate, ice-cream, chocolate, cold drink, ice-cream, juice, cold
drink, cold drink, coffee, coffee, juice

(i) Organize the data as a frequency distribution.
(ii) Draw a bar chart.

(iii) What is the modal preference? Which bar represents it?

(iv) Can a histogram be drawn for the above data? Why or why not?

Word Stock

Mean Graph Range Arrange
Interpret Draw Obtain Represent