GraphPad Statistics Guide

How Prism performs the nested t test and one-way ANOVA

How Prism performs the nested t test and one-way ANOVA

Previous topic Next topic No expanding text in this topic  

How Prism performs the nested t test and one-way ANOVA

Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function Mail us feedback on this topic!  

Prism fits a mixed effects model. It treats the main factor (that defines the data set columns) as a fixed factor, and the nested factor as a random factor. Review the difference.  

If there are no missing values, this analysis gives identical results to a simple t test or one-way ANOVA where only the mean of each subcolumn is presented to the analysis. When there are missing values, there is no shortcut.

If your statistical consultants want to know exactly how Prism computes a nested t test, show them this faq which gives an example in Prism along with corresponding R and SAS code.