Definitions for

**"Statistical Test"**Type of statistical procedure that is applied to data to determine whether the results are statistically significant (that is, the outcome is not likely to have resulted by chance alone.)

any statistical method that is used to determine which of several hypotheses are true.

A number (a statistic) that can be used to assess the probability that a statistical measure deviates from some preselected value (often zero) by no more than would be expected due to the operation of chance if the cases (e.g., persons) studied were randomly selected from a larger population. Examples include Pearson chi-square, F test, t test, and many others. Statistical tests are different from statistical measures. See also STATISTICAL MEASURE.