The Following Is a Frequency Distribution for the Ages of a Sample

question 95

Essay

The following is a frequency distribution for the ages of a sample of employees at a local company. $$\begin{array}{l}\text { Age } &\text { Frequency }\\30 - 39 & 2 \\40 - 49 & 3 \\50 - 59 & 7 \\60 - 69 & 5 \\70 - 79 & 1\end{array}$$ ​
a.
Determine the average age for the sample.
b.
Compute the variance.
c.
Compute the standard deviation.
d.
Compute the coefficient of variation.

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