Sangeetha Pulapaka
0

After removing the outlier which is 2,

The data given is  

7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 13.

Mean = total score/ number of scores

Mean =\frac{237}{24} = 9.875

The number of scores is 24 which is an even number, so median is the average of the \frac{n}{2} and \frac{n+1}{2}^{th} term or the average of the 12^{th} and the 13^{th} term.

So, median is \frac{10+10}{2} = 10