On the
sector map or in the zoom window, click a PT tile.
From the menu, click Statistics.
A dialog box appears showing the following statistics for the
combination of the product and event:
N—Observed number of cases.
EBGM—Empirical Bayesian Geometric Mean. A more
stable estimate than RR; the so-called shrinkage estimate. For more
information, see MGPS computations.
EB05—A 5% probability value that the true Relative
Ratio lies below it.
PRR—Proportional Reporting Ratio. For more
information, see PRR computations. The PRR and Chi-statistic are
available only if the data mining run was set up to compute PRR.
Chi-statistic—Chi-statistic associated with the PRR.
(If EBGM < 1, the Chi-statistic is expressed as a negative number,
indicating that the product-event combination is more rare than
expected). The Chi-statistic is the signed square root of
Chi-square.