CHAPTER 10
T-TESTS
INTRODUCTION
There are three different types of t-test: the one-sample t-test, the independent samples t-test and the paired samples t-test. The one-sample t-test compares a sample mean with some hypothesized mean. The other two t-tests are used to compare the means for an interval or ratio scale variable between two samples. The variable distinguishing the samples is the independent variable, while the interval or ratio scale variable hypothesized to be influenced by sample is the dependent variable. The main difference between independent and paired samples t-tests is that the independent samples t-test compares independent samples whereas the paired samples t-test compares related samples. Recall from Chapter 7 that independent ...
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