Question

The scores of students on a ten-point quiz is listed.



Choose the measure that best represents the data.

• A. mean
• B. median
• C. mode
• D. range

Answer 1

The correct option is A mean

The points can be plotted on a dot plot.


Median is the best measure if there is an outlier and mean is the best measure if there is no outlier.

Here, mean is the best measure because there are no extreme values (outlier) in the data and mean is the only measure of center that uses all the values of the data.

Mean = $\frac{sumofalldata}{numberofdata}$

= $\frac{4+5+6+6+7+7+7+8+8+9+9+10}{12}$

= $\frac{86}{12}$

= 7.17

Hence, among mean, median and mode of the data, mean is the best measure of data.