A Research Company Frequently Monitors Trends in the Use of Social

question 23

Essay

A research company frequently monitors trends in the use of social media by American Adults. The results of one survey of 1846 randomly selected adults looked at social media use versus age group. The table summarizes the survey results.
$\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Age Group }$
$\text { Uses Social Media }\begin{array}{|l|c|c|c|c|r|}\hline & 18-29 & 30-49 & 50-64 & 65+ & \text { Total } \\\hline \text { Yes } & 328 & 417 & 288 & 114 & \mathbf{1 1 4 7} \\\hline \text { No } & 67 & 125 & 265 & 242 & \mathbf{6 9 9} \\\hline \text { Total } & \mathbf{3 9 5} & \mathbf{5 4 2} & \mathbf{5 5 3} & \mathbf{3 5 6} & \mathbf{1 8 4 6} \\\hline\end{array}$

-Identify the variables and tell whether each is categorical or quantitative.

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Definitions:

Normal Distribution

A symmetric, bell-shaped distribution of data where most of the observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.

Standard Deviations

A measure of the amount of variation or dispersion in a set of values, indicating how spread out the data points are from the mean.

Deviation

The amount by which a single measurement differs from a fixed value such as the mean.

Kurtosis

A statistical measure that describes the shape of a distribution's tails in relation to a normal distribution.