Find the median and mean of the data set below:

Question

21
,
40
,
48
,
26
,
32
,
31
21,40,48,26,32,31

Answer 1

To find the median, we first need to put the data in order:

21, 26, 31, 32, 40, 48

There are six numbers in this data set, so the median is the middle number. In this case, the middle numbers are 31 and 32, so we take the average of these two numbers:

Median = (31 + 32)/2 = 31.5

To find the mean (or average), we add up all of the numbers in the data set and divide by the number of numbers:

Mean = (21 + 40 + 48 + 26 + 32 + 31)/6 = 31.33 (rounded to two decimal places).

Therefore, the median is 31.5 and the mean is 31.33 for this data set.