Togaware DATA MINING
Desktop Survival Guide
by Graham Williams
Google

Summary

The Summary check box provides numerous measures for each variable, including, in the first instance, the minimum, maximum, median, mean, and the first and third quartiles. Generally, if the mean and median are significantly different then we would think that there are some entities with very large values in the data pulling the mean in one direction. It does not seem to be the case for Age but is for Income.

Image rattle-audit-explore-summary

For categoric variables the



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