t-Tests: Independent Samples and Paired Samples
This chapter describes the differences between the independent-samples t-test and the paired-samples t-test, and shows how to perform both types of analyses. An example of a research design is developed that provides data appropriate for each type of t-test. With respect to the independent-samples test, this chapter shows how to use JMP to determine whether the equal-variances or unequal-variances t-test is appropriate, and how to interpret the results. There are analyses of data for paired-samples research designs, with discussion of problems that can occur with paired data.