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Testing whether two groups are sampled from populations with equal variances. As part of the t test analysis, Prism tests this assumption using an F test to ...

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

The paired t test and Wilcoxon matched pairs test first compute the difference between the two values on each row. This option creates a table and graph ...

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

How to: Nested t test Interpreting results: Nested t test Another example of a nested t test Analysis checklist: Nested t test.

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The unpaired t test compares the means of two unmatched groups, assuming that the values follow a Gaussian distribution.

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

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.

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

But the t test also takes into account sample size. If the samples were larger with the same means and same standard deviations, the P value would be much ...

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So let's imagine that you are comparing the mean of two groups (with an unpaired t test). ... Some tests (Fisher's test) are not symmetrical, so these ...

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

Confidence Interval The paired t test compares the means of two paired groups, so look first at the difference between the two means.

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

Prism computes an unpaired t test for each row, and reports the corresponding two-tailed P value. There are two ways it can do this calculation.

https://www.graphpad.com/guides/prism/8/statistics/

Prism also lets you choose Bonferroni tests when comparing every mean with every other mean. We don't recommend this. Instead, choose the Tukey test if you want ...

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