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The first step in computing a paired t test is to compute the difference for after-before for each participant or experiment. This is impossible without ...

GraphPad FAQs

In the nested t test example, the P value for Rats(Treatment) was 0.0239. Using the usual definition of statistical significance as P<0.05, you can reject ...

https://www.graphpad.com/guides/prism/latest/statistics/

So let's imagine that you are comparing the mean of two groups (with an unpaired t test). ... A one-tailed test is appropriate when previous data, physical ...

GraphPad FAQs

Choose test Choose one of three tests: A one-sample t test compares the mean of a single column of numbers against a hypothetical mean that you provide.

https://www.graphpad.com/guides/prism/latest/statistics/

No. Post tests control for multiple comparisons. The significance level doesn't apply to each comparison, but rather to the entire family of comparisons.

GraphPad FAQs

Incorrect analysis: t test of all data. It is tempting, but not appropriate, to treat these data as n=12 in each group. If ...

https://www.graphpad.com/guides/prism/latest/statistics/

P from z · P from t · P from F · P from r · P from chi · What is a P value? · Performing hypothesis testing? We can help. · How do I interpret P values?

https://www.graphpad.com/quickcalcs/pvalue1/

First, ask Prism to report F or t to its maximum number of significant digits -- a choice in the t test or ANOVA parameters dialog. Then use Excel to compute P ...

GraphPad FAQs

The Fishers LSD test is basically a set of individual t tests. It is only used as a followup to ANOVA.

https://www.graphpad.com/guides/prism/latest/statistics/

The MW test has been extended to handle tied values. The KS test does not handle ties so well. If your data are categorical, so has many ties, don't choose the ...

https://www.graphpad.com/guides/prism/latest/statistics/