| A | B |
|---|
| range | the difference between the maximum and minimum data entries in a set of data. |
| sum of squares | when you add the squares of the deviations, you compute this. |
| population variance | the mean of the squares of the deviations in a population set. |
| population standard deviation | the square root of the population variance of a population data set of N entries. |
| fractiles | numbers that partition, or divide, an ordered set into equal parts. |
| quartiles | ordered data divided into four equal parts |
| interquartile range | the difference between the 3rd and 1st quartile in a data set. |
| standard score | represents the number of standard deviations a given value x falls from the mean |
| z score | same as the standard score |
