Question

Draw a histogram for the following data :
C.I 40–50 50–60 60–70 70–80 80–90
f 12 15 10 5 8

Answer 1

Histogram is shown in graph in image.

Answer 2

A histogram for the following data :

C.I  40–50    50–60     60–70    70–80    80–90

f        12             15             10            5             8

is as attached below.

A histogram is a bar graph like, diagram/graph of rectangles having areas proportional to the frequencies of a variable and the width proportional to the class interval.

The width of the rectangles of a histogram for given data is given by,

50 - 40 = 10 units.

Class interval            Frequency

40–50                            12

50–60                            15

60–70                            10  

70–80                            5

80–90                            8

From the attached graph it's clear that a rectangle with the highest length has the highest frequency of 15 with a class interval of 50 - 60.

And a rectangle with the lowest length has the lowest frequency of 5 with class interval of 70 - 80.