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You've measured a variable in one group, and the means (or median) is not the same as expected by theory (or by the null hypothesis). Is that due to chance?
https://www.graphpad.com/guides/prism/latest/statistics/
The unequal variance test, also called the Welch test. It does not assume that data were sampled from populations with the same variance.
https://www.graphpad.com/guides/prism/latest/statistics/
The only difference a set of t tests and the Fisher's LSD test, is that t tests compute the pooled SD from only the two groups being compared.
https://www.graphpad.com/guides/prism/latest/statistics/
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/
Prism can easily perform a ratio t test from two columns of data entered into a Column data table. 1.Create a column data table and enter two columns of data.
https://www.graphpad.com/guides/prism/latest/statistics/
Points or bars? The graphs above plot the sample data for an unpaired t test. We prefer the graph on the left which shows each individual data point.
https://www.graphpad.com/guides/prism/latest/statistics/
The paired t test assumes that you have sampled your pairs of values from a population of pairs where the difference between pairs follows a Gaussian ...
https://www.graphpad.com/guides/prism/latest/statistics/
The unpaired t test compares the means of two groups. Note that this test is often called independent samples t test. The most useful result is the confidence ...
https://www.graphpad.com/guides/prism/latest/statistics/
A one-sample ratio t test compares the geometric mean of a single column of numbers against a hypothetical geometric mean that you provide.
https://www.graphpad.com/guides/prism/latest/statistics/
Prism offers the nested t test. We chose that name because it best describes the use of this test. You want to compare two treatment groups.
https://www.graphpad.com/guides/prism/latest/statistics/
