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  • Skip Navigation LinksOne-Sample t-Test Formulas

One-Sample t-Test Formulas

Below you will find descriptions and details for the 5 formulas that are used to compute a one-sample t-test.

Beta function:
Beta function formula
Cumulative distribution function (CDF) for the t-distribution:
Cumulative distribution function (CDF) for the t-distribution formula
Variable definitions:
v = degrees of freedom
t = upper limit of integration
I = regularized lower incomplete beta function
Lower incomplete beta function:
Lower incomplete beta function formula
Regularized lower incomplete beta function:
Regularized lower incomplete beta function formula
Variable definitions:
the numerator = lower incomplete beta function
the denominator = beta function
t-value and associated degrees of freedom:
t-value and associated degrees of freedom formula
Variable definitions:
x = sample mean
μ = hypothesized mean
s = sample standard deviation
n = sample size
df = degrees of freedom
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