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) 16
B) 18
C) 13
D) 25

Question

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) 16
B) 18
C) 13
D) 25

Quizplus · Accepted Answer

The mean of the data is 15.2 and the standard deviation is 2.4. Therefore, the measurements that fall within one standard deviation of the mean are those between 12.8 and 17.6. There are 16 measurements that fall within this range.

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