Student's T-Test

Free online t-test calculator

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Group 1:

Enter your continuous, numeric data for group 1 in this column.
Enter one number per line.


Mean = 0
Standard Deviation = 0
Standard Error = 0

Describe your groups:
groups have equal variance
groups have unequal variance
groups are matched

How many tails?
1-Tailed t-test
2-Tailed t-test

Enter numeric data in both columns, and click "calculate"

Clear all data

Group 2:

Enter your continuous, numeric data for group 2 in this column.
Enter one number per line.


Mean = 0
Standard Deviation = 0
Standard Error = 0
Student's t-test is a method in statistics to determine the probability (p) that two populations are the same in respect to the variable that you are testing.
This is a free online statistics calculator that computes the p value for Student's t-test.
You can choose the number of tails your t-test has, and you can select a t-test for groups with equal variance,
unequal variance, or paired groups, depending on where your data came from.
Student's t-test assumes that your data are continuous and come form a normally distributed population.
If your data are not continuous, or do not come from a normally distributed population, you should consider a different statistical test.