Mean – the average. Add all numbers then divide by total number of entries.
For example: the mean for 3, 4, 5, 3, 8, 5, 6,
Is 3 + 4 + 5 + 3 + 8 + 5 + 6 = 34
Since there are 7 entries, the mean = 34 divided by 7 or 4.85
(We remember by thinking about how “mean” it is to have to do all that math.)
Median – arrange the entries in order and find the middle number.
For example: 3, 4, 5, 3, 8, 5, 6 arranged in order is 3, 3, 4, 5, 5, 6, 8 , so 5 is the median.
 Remember to represent each entry, even if it appears more than once.
(We remember by thinking that median sounds like middle.)
Mode – the entry that appears most often.
For example: From the sample above 3 and 5 are both modes, because they both appear
the most often.
(We remember by thinking that mode begins like most.)