Chapter 13.5, Problem 15HP

To determine

To plot:Draw histogram with the give data.

Explanation of Solution

Given information:

A data set of number of text messages each person sends or receives during a week

The data is displayed as follows:

Number of SMS	Frequency
10–19	5
20–29	3
30–39	5
40–49	0
50–59	6

Follow the steps to draw a histogram.

1. Draw and label horizontal and vertical axis as shown below.

2. Show the intervals from frequency table on the horizontal axis and an interval of 1 on the vertical axis.

3. For each interval draw a bar whose height is given by the frequency.

  

Histogram gives a better presentation of the data. Above fig tells that 10-19 messages and 40-49 messages are common among class mates to receive or send in a month.