the table gives information about the lengths of time spent in hours, some children spent watching Tv last week

A histogram can be defined as a type of chart that is used to graphically represent a group of data points (statistical information) into user-specified ranges through the use of rectangles.

Generally, the area of each rectangle is directly proportional to the data frequency and its width is equal to the class interval.

Given the following data:

Length of time (t) Frequency.

0 ≤ t < 10 8

10 ≤ t < 15 15

15 ≤ t < 20 10

20 ≤ t < 30 11

The vertical axis (y-axis) of the histogram would be used to represent the frequency density while the horizontal axis (y-axis) of the histogram would be used to represent the lengths of time spent (in hours) spent by the children in watching Tv last week as illustrated in the diagram below.

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