For the Following Frequency Distribution Assume the Data Represent a Population)

question 76

Short Answer

For the following frequency distribution assume the data represent a population),
$$\begin{array} { c c } \text { Class } & \text { Frequency } \\70-79 & 5 \\80-89 & 9 \\90-99 & 11 \\100-109 & 9 \\110-119 & 6\end{array}$$
a. Compute the mean.
b. Compute the standard deviation.

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