View sector map statistics

1. On the sector map or in the zoom window, click a PT tile.
2. 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.
3. To close the dialog box, click Close.