Question

Find the mean of the following data.

Data 1	Data 2	Data 3	Data 4
$9.5$	$7.4$	$2.6$	$8$

• A. $27.5$
• B. $110$
• C.
  $6.875$
• D. None of the above

Answer 1

The correct option is C

$6.875$
We know,
$\text{Mean}=\frac{\text{Sum of all data points}}{\text{Total number of data points}}$

$=\frac{9.5+7.4+2.6+8}{4}$
$=\frac{27.5}{4}$
$=6.875$

Hence, the mean of the given data points is $6.875$.

$\underset{–}{\text{Note:}}$ We can see that the mean, $6.875$ is between the maximum $\left(9.5\right)$ and minimum $\left(2.6\right)$ values of the given data set, and the mean, $6.875$ is NOT one of the data points of the given data set $\{9.5,7.4,2.6,8\}$.