To work out the median, we firstly rearrange these numbers into numerical order:
3 6 9 10
The middle number is the median. However, in this example, there is no middle number, so we take the mean of 6 and 9 (mean: (6+9)/2=7.5). So the median is 7.5
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7.5
1. order them
2. find the middle number
3. if there is two, find the middle of the two numbers
6+9 = 15
15/2 = 7.5
BOOM!
Median of the set = arithmetic mean of 8 and 9 = 8.5
Sample size: 12 Sorted sample: 3, 5, 6, 6, 7, 7, 8, 9, 9, 9, 10, 10 Middle numbers: 7, 8 Average of middle numbers, known as median: 7.5
The median is 7.5
It is 8.
5.5