Two Sample t-test Calculator

A two sample t-test is used to test whether or not the means of two populations are equal.

This type of test assumes that the two samples have equal variances. If this is not the case, you should instead use the Welch’s t-test calculator.

To perform a two sample t-test, simply fill in the information below and then click the “Calculate” button.

Enter raw data Enter summary data

Sample 1

Sample 2

x₁ (sample 1 mean)

s₁ (sample 1 standard deviation)

n₁ (sample 1 size)

x₂ (sample 2 mean)

s₂ (sample 2 standard deviation)

n₂ (sample 2 size)

t = -1.608761

df = 22

p-value (one-tailed) = 0.060963

p-value (two-tailed) = 0.121926

Published by Zach