Answer:
Mean = 14
and Median = 14
Explanation:
We are given a data set as:
20.3 12.5 7.6 13.9 9.2 21.7 7.6 17.5 15.6 14.1
there are a total of 10 data points.
Now, the mean of these data points is the average of the data set.
i.e.

i.e.

We know that median is the central tendency of the data and it always exist in the middle of the data set.
Firstly we arrange the data points in the increasing order as follows:
7.6 7.6 9.2 12.5 13.9 14.1 15.6 17.5 20.3 21.7
Now, we know that the median of the data exist in between 13.9 and 14.1
i.e.
