Question

In a frequency histogram the frequency of a class is?
a. height multiplied by the width of the corresponding bar.
b. area of the corresponding bar
c. width of the corresponding bar
d. height of the corresponding bar
e.none of these

Answer 1

Solution:

In a frequency histogram, we take class intervals on horizontal x-axis and frequencies on vertical y-axis. Then we draw adjacent vertical rectangles over each class intervals of height equal to frequency of that class. Thus correct option is d.

d. Height of the corresponding bar.

Example:

Classes	frequency
0-10	3
10-20	7
20-30	10
30-40	6

Here we can see height of each class interval is equal to frequency of that class.