Chi-square test result and adjusted df for Normal distribution fitting analysis
Article ID: KB0081100
Updated On:
| Products | Versions |
|---|---|
| Spotfire Statistica | All Versions |
Description
The histogram plot generated from Statistica Normal Distribution Fitting analysis will output Chi-square test results by default.
You may wonder what each tab under the Normal Distribution Fitting dialog is used for and how the results are calculated. This article contains links for topics you may be concerned when performing this analysis.
You may wonder what each tab under the Normal Distribution Fitting dialog is used for and how the results are calculated. This article contains links for topics you may be concerned when performing this analysis.
Issue/Introduction
Chi-square test result and adjusted df for Normal distribution fitting analysis
Environment
Windows
Resolution
1. All about Distribution Fitting
2. The Reviewing Distribution Fitting Results explains that the "df adjusted" is accompanied in Chi-square test when the expected frequencies are less than 5 .
3. An example of fitting normal distribution illustrates that the Kolmogorov-Smirnov test and histogram for checking normality of the data. As is shown, the p-value listed in the histogram graph or summary is the corresponding test result against the null hypothesis that the data follows a normal distribution.
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