My Oracle Support Banner

Advanced Insights: Z-Score Threshold Questions (Doc ID 2651689.1)

Last updated on DECEMBER 24, 2020

Applies to:

Oracle DataFox Cloud Service - Version N/A and later
Information in this document applies to any platform.


 1. Why is does the threshold for a Z-score turn green >= +5?

The green coloring means it is statistically significant.
Z-scores > +3 or < -3 are usually extremely rare on a normal distribution curve.
Thus, 5 seems too high.
99% of Z-scores are <= +3 or >= -3 standard deviations from the mean.

2. How is it possible for an attribute to have a Z-score that is 382.65?
Usually on a normal distribution curve Z-scores are <= +3 or >= -3.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.