This selection show the histogram for the selected attribute. The display consists of the histogram and a grid.
You can view the histogram in a horizontal or vertical orientation. To change the orientation, click the appropriate radio button under Graph orientation. (The default orientation is Vertical; you can change it to Horizontal.)
You can adjust the relative amount of space taken up by the histogram and the summary grid by clicking on the border between them and dragging.
The exact information displayed depends on the datatype of the attribute, as follows:
NUMBER
or FLOAT
) attributes, the histogram and the bins are displayed along with the following statistics: Minimum Value, Maximum Value, Average Value, Variance, Sigma (Standard Deviation), Skew (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).NOTE: Character attributes may not be displayed at all, depending on the transformation that is displaying the histogram.
The histograms created by Oracle Data Miner use a sample of the data and may be slightly different each time they are displayed; for details, see Histogram Differences.
Use the Attribute Name dropdown list at the top of the display user to see the histogram for other attributes without returning to the calling dialog.
Copyright © 2006, 2008, Oracle. All rights reserved.