Chapter 6, Problem 6.8CYS

To determine

To find: How many individuals are described in this table.

Answer to Problem 6.8CYS

The correct option is (b) 1,918.

Explanation of Solution

Reason for correct answer:

The data shows the number of cell phone users who tends to use social media on their phone and the data is separated according to their age group.

Social media usage on Phone	Yes	No
18-29	228	112
30-49	281	281
50-64	106	481
65+	21	408

The total number of individuals given in the data is calculated as follows:

$\begin{array}{c}\text{Total number of individuals}=228+281+106+21+112+281+481+408\\ =1,918\end{array}$

Thus, the option (b) 1,918 is correct.

Reason for incorrect answers:

Option (a) 636.

The given option represents the total number of individuals are 636. But, there are 1,918 individuals given in the data.

Option (c) Need more information.

The given option represents the information given is not sufficient enough to find the number of individuals. But, there is sufficient information given in the data to obtain the total number of individuals.

Thus, the Options (a) and (c) are incorrect.

Conclusion:

Thus, the total number of individuals given in the data is 1,918. Thus, the correct option is (b) 1,918.

Statistics Concept Introduction

Introduction:

Individual:

Individuals may be defined as the object used for describing the data. Also, an individual may be people, animals or things.