In this post, learn about test statistics, how to calculate them, interpret them, and evaluate statistical significance using the critical value and p-value methods.

Jul 23, 2025 · In statistical hypothesis testing, a test statistic is a crucial tool used to determine the validity of the hypothesis about a population parameter. This article delves into the calculation of test …

May 29, 2025 · The specific formula for calculating a test statistic depends on the type of hypothesis test you’re conducting. Different tests are used for different types of data and research questions.

If you've ever wanted to know how to do a t-test by hand, we provide the necessary t-test formula, as well as tell you how to determine the number of degrees of freedom in a t-test. You can also learn …

Mar 17, 2022 · Don’t know how to find a test statistic? Read what a test statistic is, how to complete one with formulas, and how to find the value for t-tests.

A hypothesis test is typically specified in terms of a test statistic, considered as a numerical summary of a data-set that reduces the data to one value that can be used to perform the hypothesis test.

When using a standard normal distribution (i.e., z distribution), the test statistic is the standardized value that is the boundary of the p-value. Recall the formula for a z score: \ (z=\frac {x-\overline x} {s}\). The …

What Is A Test Statistic? A Test Statistic is a random variable derived from sample data during hypothesis testing. It serves as a valuable component in deciding whether to reject or accept a null …

Mar 12, 2025 · Learn how to calculate test statistics with our easy-to-use calculator and comprehensive guide. Understand statistical testing through practical examples and FAQs.

Mar 12, 2025 · Enter your sample mean, population mean, standard deviation, and sample size in the respective fields. Click "Calculate" to get your test statistic. Use the clear button to reset inputs. …