A Survey Asked 805 People How Many Times Per Week

A survey asked 805 people how many times per week they dine out at a restaurant. The results are presented in the following table.

$\begin{array} { c c } \hline \text { Number of Times } & \text { Frequency } \\\hline 0 & 100 \\1 & 267 \\2 & 220 \\3 & 111 \\4 & 51 \\5 & 25 \\6 & 24 \\7 & 7 \\\hline \text { Total } & 805\end{array}$

Consider the 805 people to be a population. Let X be the number of times per week a person dines out For a person sampled at random from this population. Compute the standard deviation

A) 2.1
B) 1.5
C) 2.2
D) 1.9