This Test Statistic Calculator calculates the test statistic of either one population mean, comparing two population means, or one population proportion.
t-test. As a bonus, we give some step-by-step examples of how to perform Z-tests! Or you may also check our t-statistic calculator, where you can learn the concept of another essential statistic. If you are also interested in F-test, check our F-statistic calculator....
What can you do with this z-test statistic calculator for hypothesis testing? The formula for a z-statistic is z=Xˉ−μ0σ/nz=σ/nXˉ−μ0 The null hypothesis is rejected when the z-statistic lies on the rejection region, which is determined by the significance level (αα) and...
The t-test calculator, work with steps, formula and practice problems would be very useful for grade school students (K-12 education) to learn what is appropriate test statistic for t-Test, how to find it. With this statistics and probability tool, we can effortlessly make student's t-dist...
Test statisticχ2(2) = Z2kurtosis + Z2skewness Distribution Normality effect size We use the D statistic as effect sizeWe know only the sample effect size!.We define the following effect levels of the effect size: Small - the effect size of Chi-squared(df=20) Medium - the effect size...
In a one-sample test (either a t-test or a z-test), we will typically calculate one test statistic, and then either use that test statistic's critical values or a p-value to determine our conclusion. In a two-sample test, we are comparing means (for example, testing a claim that ...
You can download this sheet as Excel and use it as a fast and easy z-test calculator. Given 2 sample proportions and 2 sample sizes, our tool checks if the sample size assumption is met; computes the 2-tailed-significance-level for the z-test; computes a confidence interval for the diff...
t-Test Calculator is a tool used to determine whether there is a statistically significant difference between the means of two independent groups. What is a t-Statistic? The t-Statistic is a value derived from your sample data that measures the size of the difference relative to the variation...
Welcome to our t-test calculator! Here you can not only easily perform one-sample t-tests, but also two-sample t-tests, as well as paired t-tests. Do you prefer to find the p-value from t-test, or would you rather find the t-test critical values? Well, this t-test calculator ca...
Z Test Formula These Z test formulas allow you to calculate the test statistic. Use the Z statistic to determine statistical significance by comparing it to the appropriate critical values and use it to find p-values. The correct formula depends on whether you’re performing a one- or two-sa...