| Descriptive Statistic | Explanation of Statistic |
|---|
| Correlation coefficient | A number between –1.0 and +1.0 whose sign indicates the type (+ = positive and – = negative) and whose absolute value (0 to 1.0) indicates the strength of the relationship between two variables |
| Mean | Numerical average for a distribution of scores |
| Median | Middle score in a distribution of scores when all scores are arranged in order from lowest to highest |
| Mode | Most frequently occurring score or scores in a distribution of scores |
| Range | Difference between highest and lowest scores in a distribution of scores |
| Standard deviation | Average extent to which the scores vary from the mean for a distribution of scores |