Read the given instruction and answer the following questions:
$(i)$ What information is depicted in the histogram?
$(i i)$ There is a 'Kink' before the class interval $125 - 130$ on the horizontal axis.What does it mean?

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Solution

(i) It shows a histogram. The y-axis (vertical axis) shows number of girls and x-axis(horizontal axis) shows height of the girls in a class.
(ii) The kink shows that there are no irls of height $0 - 125$ cms.

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Question 90(ii)

Look at the histogram below and answer the questions that follow. ?

Which class interval has the least numebr of students ?

Prepare the frequency distribution table for the given set of scores:

39, 16, 30, 37, 53, 15, 16, 60, 58, 26, 28, 19, 20, 12, 14, 24, 59,

21, 57, 38, 25, 36, 34, 15, 25, 41, 52, 45, 60, 63, 18, 26, 43, 36, 18,

27, 59, 63, 46, 48, 25, 33, 46, 27, 46, 42, 48, 35, 64, 24.

Take class intervals as (10 -20), (20 − 30), … and answer the following:

(i) What does the frequency corresponding to the third class interval mean?

(ii) What is the size of each class interval? Find the midpoint of the class interval 30- 40.

(iii) What is the range of the given set of scores?

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