T-Test Calculator
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)
Statistics Calculators. Here you'll find a set of statistics calculators that are intuitive and easy to use. Included are a variety of tests of significance, plus correlation, effect size and confidence
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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