Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place thanthat used for the observations.
-Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week.
$\begin{array} { l l l l l l }
8.1 & 8.6 & 8.7 & 7.5 & 8.3 & 8.1 \
8.7 & 8.7 & 7.9 & 8.1 & 7.5 & 6.6 \
7.3 & 8.6 & 8.6 & 8.6 & 8.3 & 8.7
\end{array}$
A)7.73 hr
B)8.39 hr
C)8.64 hr
D)8.16 hr

Question

Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place thanthat used for the observations.
-Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. 
$\begin{array} { l l l l l l } 
8.1 & 8.6 & 8.7 & 7.5 & 8.3 & 8.1 \
8.7 & 8.7 & 7.9 & 8.1 & 7.5 & 6.6 \
7.3 & 8.6 & 8.6 & 8.6 & 8.3 & 8.7
\end{array}$ 
A)7.73 hr
B)8.39 hr
C)8.64 hr
D)8.16 hr

Quizplus · Accepted Answer

To find the mean, add all the hours and divide by the total number of observations. The sum of the hours is 199.9, and there are 24 observations. $199.9 \div 24 = 8.329$, rounding to one more decimal place than the observations gives 8.3, but since the options are not exactly matching the calculated mean due to rounding, the closest option is 8.16 hr.

Find the Mean for the Given Sample Data A)773 Hr B)8

Find the Mean for the Given Sample Data A)773 Hr
B)8