Math & Statistics
Two-Sample T-Test Calculator
Compare the means of two independent samples using a t-test.
Your inputs
Change any value to update the result instantly.
t-statistic
2.5662
Degrees of freedom
55.3337
Two-tailed p-value
0.013
Standard error
1.169
Significant at the 5% level
Formula and working
t = (x̄₁ − x̄₂) ÷ √(s₁²/n₁ + s₂²/n₂)
- 1
Collect the inputs
Sample 1 mean = 25; Sample 1 std dev = 4; Sample 1 size = 30; Sample 2 mean = 22; Sample 2 std dev = 5; Sample 2 size = 30
- 2
Apply the formula
t = (x̄₁ − x̄₂) ÷ √(s₁²/n₁ + s₂²/n₂)
- 3
Result
t-statistic = 2.5662
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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