Our Z-test calculator is here to help you learn about, and perform, a one-sample Z-test.

Calculate one-sample and two-sample Z-tests, p-values, and confidence intervals with our free online Z-Test Calculator. Ideal for students and researchers.

The Z test checks if the expected mean is statistically significant, based on a sample average and a known standard deviation. The tool also compares the sample data to the standard …

Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.

Jun 30, 2022 · A one sample z-test is used to test whether or not the mean of a population is equal to some value when the population standard deviation is known. To perform a one …

Sep 28, 2024 · This calculator helps you determine whether a sample mean significantly differs from a hypothesized population mean when the population standard deviation is known.

In addition to calculating the p-value and z-score of the test statistic, this calculator will also ask for a level of significance and provide a conclusion and analysis.

Mar 14, 2025 · Free online Z-test calculator for hypothesis testing. Calculate Z-scores, p-values, and interpret statistical significance for population mean comparisons.

Our interactive calculator provides both calculation capabilities and visual representation of your Z-test results, with an easy-to-use interface for statistical analysis.

Use our Z-Test calculator to perform hypothesis testing for population means and proportions. Input your sample data and get instant results with interpretation.