Mean-arrange the numbers in ascending order, add up the set of data then divide by the number of data and you get your mean.
Range-arrange the numbers in ascending order, subtract the biggest number by the smallest number and you get the range.
Mode-range the numbers in ascending order,look for the number that you see the most and that is your mode.
Median-arrange the numbers in ascending order,look for the middle number and that is your median.
Here is a video on MMM
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