The Following Is a List of 25 Measurements How Many of the Measurements Fall Within One Standard Deviation

Multiple Choice

The following is a list of 25 measurements: $$\begin{array} { l l l l l l l l l l l } 12 & 18 & 14 & 17 & 19 & 16 & 14 & 18 & 15 & 17 & 11 \\13 & 14 & 11 & 16 & 18 & 15 & 13 & 17 & 15 & 14 & 19 \\12 & 16 & 17 & & & & & & & &\end{array}$$ How many of the measurements fall within one standard deviation of the mean?

A) 18
B) 25
C) 13
D) 16