The license is generated based on a number for the named option and a file maps these features back to the name of the option. The option codes are specific to the option name and the Pro/ENGINEER config id, and can be found listed on the Pro/ENGINEER License Pack.
A test statistic is a standardized value that is calculated from sample data during a hypothesis test. You can use test statistics to determine whether to reject the null hypothesis. The test statistic compares your data with what is expected under the null hypothesis.
Statistical Analysis of the T-Test. The formula used to calculate the test is a ratio: The top portion of the ratio is the easiest portion to calculate and understand, as it is simply the difference between the means or averages of the two samples. The lower half of the ratio is a measurement of the dispersion, or variability, of the scores.