Question

A teacher asked each of his students how many books were read during the summer. Which histogram accurately displays this data?

Answer 1

The histogram that accurately displays this data is:

Histogram A

Explanation:

For a histogram we first divide the data into disjoint class intervals such that the width of the intervals is equal.

Here we divide the class interval as:

0-9 , 10-19 , 20-29 , 30-39 and 40-49

Also, on making a frequency table we may get the height of bars in the histogram corresponding to each class interval.

Class-Interval Frequency

0-9 9

10-19 6

20-29 3

30-39 3

40-49 3

This means that the height of the class interval 0-9 must be 9

10-19 must be 6

20-29 must be 3

30-39 must be 3

and 40-49 must be 3.

Answer 2

The frequency distribution is given below:

Class Frequency

0 - 9 9

10 - 19 6

20 - 29 3

30 - 39 3

40 - 49 3

From the given 4 options, the histogram in option A accurately displays this data. Hence the option A is correct.