Define median mode and mean

The median is the middle number of any given set when they are in order, least to greatest. If there is an even number of values, the median is the average of the middle two.

Ex. (10, 17, 20, 45, 68)

The median is 20.

In any given set, the mode is the number that appears most often. If no number appears more frequently than any other, there is no mode.

Ex. (10, 17, 20, 45, 68)

This set has no mode.

In any given set, the mean is the average, which is the total of the numbers divided by how many numbers there are.

Ex. (10, 17, 20, 45, 68)

68 + 45 + 20 + 17 + 10 = 160

There are 5 numbers in this set.

160/5 = 32

The mean is 32.