Find the variance for the given data. Round your answer to one more decimal place than the original data.
-Jeanne is currently taking college zoology. The instructor often gives quizzes. On the past five quizzes, Jeanne got the following scores: $$\begin{array} { l l l l l }
16 & 7 & 7 & 18 & 8
\end{array}$$
A) 28.6
B) 28.7
C) 54.8
D) 23.0

Question

Find the variance for the given data. Round your answer to one more decimal place than the original data.
-Jeanne is currently taking college zoology. The instructor often gives quizzes. On the past five quizzes, Jeanne got the following scores: $$\begin{array} { l l l l l } 
16 & 7 & 7 & 18 & 8
\end{array}$$
A) 28.6
B) 28.7
C) 54.8
D) 23.0

Quizplus · Accepted Answer

The variance is 28.7. The mean is 11.2. The variance is the average of the squared differences from the mean. The squared differences are 25.6, 17.64, 17.64, 46.24, and 10.24. The average of these is 28.68, which rounds to 28.7.

Find the Variance for the Given Data 1677188\begin{array} { l l l l l } 16 & 7 & 7 & 18 & 8\end{array}16​7​7​18​8​

Find the Variance for the Given Data $\begin{array} { l l l l l } 16 & 7 & 7 & 18 & 8\end{array}$