GraphPad Statistics Guide

Q&A: One-way ANOVA

Q&A: One-way ANOVA

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Q&A: One-way ANOVA

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Is it possible to define the groups with a grouping variable?
Can I enter data in lots of columns and then choose which to include in the ANOVA?
Can I enter data as mean, SD (or SEM) and N?
If I have data from three or more groups, but I am particularly interested in comparing certain groups with other groups. Is it OK to compare two groups at a time with a t test?
I know the mean, SD (or SEM) and sample size for each group. Which tests can I run?
I only know the group means, and don't have the raw data and don't know their SD or SEM. Can I run ANOVA?
Can I use a normality test to make the choice of when to use a nonparametric test?
I want to compare three groups. The dependent variable has two possible outcomes. How can I compare the groups?
What does 'one-way' mean?
What does 'repeated measures' mean? How is it different than 'randomized block'?
How should I decide whether or not to assume sphericity?
Can the overall ANOVA give a statistically significant result, while no multiple comparison test does?