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This tab show the statistics calculated by Explore Data.
Attributes are listed the Statistics grid. For each attribute, the name, data type, histogram and summary statistics are displayed. To view a large version of the histogram for an attribute, select the attribute. The histogram is displayed below the grid.
Histograms created by Oracle Data Miner use a sample of the data and be slightly different each time they are displayed.
For all data types, a histogram is created; the number of distinct values, the percent of NULL values and the number of distinct values are displayed.
Additional statistics calculated depend on the data type of the attribute:
For character attributes (VARCHAR2), the Mode is calculated.
For numerical (NUMBER or FLOAT) attributes, Average, Minimum Value, Maximum Value, Standard Deviation, Skewness (a measure of the asymmetry of the distribution), and Kurtosis (a measure of flatness or peakedness of the curve describing a frequency distribution in the region about its mode) are calculated.