Hi experts,

Background to my question:

I have several, independently repeated experiments, all the same setting.

I calculated the descriptive measures as mean value and standard deviation for each.

I entered these values to GraphPad Prism software (8.0),

• Column table, enter and plot error values already calculated elsewhere
• Mean SD N
• Group A and Group B in columns
• One experiment per row

Then I run a paired t test (parametric), since mean values in one row belong to the same experiment

My questions now is:

How does GraphPad Prism calculate the t test here, what is the equation behind it?

I went through manuals and web without finding the answer. I am very grateful, if someone could help me here!

Best wishes

Eva