For instance, I have a bar chart - in which I have 4 samples/bars. for these 4 bars, I want to check statistical significance for all combinations.
How can I do it? Can unpaired t-test be used - to compare 2 samples at a time? or this is not correct. What is then the appropriate way in which all the samples/ bars can be compared against each other at the same time.
Is there any easy-quick way to nicely represent it in a chart?