The mean is the average of measurements within a particular sampling. This value equals the sum of all the numbers in a sampling divided by the number of values in the sample. For example: the mean of numbers 1.1, 1.1, 1.1, 1.3, 1.4 would be 1.2

The median is the middle measurement within a sampling. This value is determined by lining up all the different measurements and the middle number is the median. For example: the median of numbers 1.1, 1.1, 1.1, 1.3, 1.4 would be 1.3

The mode is the most commonly occurring number within the measurements. This value is determined by adding up how many times each measurement occurs and choosing the value with the highest frequency. For example: the mode of numbers 1.1, 1.1, 1.1, 1.3, 1.4 would be 1.1

In an ideal distribution, all three values should be the same. For example: For the numbers 1.1, 1.2, 1.2, 1.2, 1.3 the mean, median, and mode all equal 1.2.

-Andy