Question

find the median and mean of the data set below: 39, 48, 32, 47, 31, 38, 31

Explanation:

Step1: Sort the data set

$31,31,32,38,39,47,48$

Step2: Find the median

Since there are 7 data - points (an odd number), the median is the middle value. So the median is $38$.

Step3: Calculate the mean

The mean $\bar{x}=\frac{31 + 31+32+38+39+47+48}{7}=\frac{266}{7}=38$

Answer:

Median = $38$
Mean = $38$