Statistics & Probability
T-Test Calculator
Lets users solve and check t-test instantly with formula, steps and examples — no manual math.
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Your result
t statistic
1.25
t = (x̄ − μ₀)/(s/√n) = 1.25 with 24 df (approx two-tailed p ≈ 0.2113).
Degrees of freedom
24
Approx two-tailed p
0.2113
About this calculator
One-sample t-test: t = (sample mean − hypothesized mean) / (s/√n), with n−1 degrees of freedom. Compare t to the critical value from the t-distribution; the p-value shown uses a normal approximation (accurate for larger n).
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