Enter your paired data into the two columns labeled "Sample 1" and "Sample 2". Each row should represent a related pair (e.g., before and after measurements).
Ensure both samples contain the same number of values. Empty rows will be ignored.
Click the "Calculate" button.
The calculator will display the mean difference, standard deviation of the differences, t-statistic, degrees of freedom, and the p-value.
Use the results to interpret whether the difference between the two sets of data is statistically significant.
What is a Paired Samples T-Test?
A paired samples t-test (also known as a dependent t-test) is a statistical method used to compare two related means.
It is commonly applied when measuring the same group before and after an intervention, or comparing matched pairs like twins or pre-test/post-test scores.
The test helps determine whether the average difference between the paired observations is statistically significant.