If needed, specify the degrees of freedom of the test statistic's distribution. Enter the value of test statistic computed for your data sample. Our calculator determines the p

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1. Calculate the z-score. Assume you want to perform a z-test to determine whether the means of two populations are equal. The z-score calculation (z = (X - μ) / σ)

Formula: t = (x̄ - μ 0) ÷ (σ / √n) Where. x̄ is sample mean. μ 0 is population mean. σ is sample standard deviation. n is sample size. t is test statistics in hypothesis testing. Related

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