Question

Mark ran a mean distance of 13.2 km in five days. The next day, Mark ran 20 km.

Find the mean distance Mark ran in the six days.

Answer 1

14.3 km (1 d.p.)

Explanation:

To find the mean, divide the sum of all data values by the total number of data values.

If Mark ran a mean distance of 13.2 km in five days, we can use the mean distance for each of the 5 days in our calculation.

`\begin{aligned}\implies \sf mean\:distance & = \sf (13.2+13.2+13.2+13.2+13.2+20)/(6)\\ & \sf =(86)/(6)\\\\ & = \sf 14.3\:km\:\:(1\:d.p.)\end{aligned}`