T-Tests and Z-Tests

Start with the test designs

The resources on this page offer several ways to explore t-tests and z-tests. Start with the mind map called The Student T-test for an overview of a test that compares samples. Then look at the hypothesis testing mind map, which includes repeated measures and independent group designs.

For a closer look at test choices, the Chapter 13 flashcards cover questions about when t-tests and z-tests are the same, their differences, and degrees of freedom. The Ch12-17 flashcards include t-test design issues, formulas and hypotheses for different designs.

Use maps and quizzes together

The Independent T-test mind map covers independent groups, the type of data used and looking for a difference between samples. Follow it with the quiz of the same name to work through questions about the data and the groups involved.

Next, use the Dependent (related) t-test mind map to explore related or paired samples and repeated measures. The quiz with the same title asks about the kind of difference being tested and the data used. Moving between each map and quiz lets you check the terms in context as you study.

Connect the tests to hypothesis testing

These resources form part of the Hypothesis Testing unit in Statistics and probability. Chapter 12 Notes brings together conditions, hypotheses and test statistics for a population mean t-test and a population proportion z-test. The Stats L2 quiz also covers the null hypothesis and test statistics.

Use the notes alongside the flashcards to compare the terminology, then return to a map when you want to connect a test with its design. Choose a quiz and use it to guide your next study session.