SPSS paired samples t-test is a procedure for testing whether the means of two metric variables are equal in some population. Both variables have been measured on the same cases. Although “paired samples” suggests that multiple samples are involved, there’s really only one sample and two variables. The screenshot below illustrates the basic idea. SPSS […]
Null Hypothesis Assumptions Levene’s test in SPSS Output Reporting Levene’s Test – What Is It? If we want to compare 3(+) groups on a metric variable, we usually want to know if they have different mean scores. In most cases, we’ll run an ANOVA in order to find out. However, this requires the homogeneity assumption which states that the population […]
SPSS one-sample t-test tests if the mean of a single metric variable is equal to some hypothesized population value. The figure illustrates the basic idea. SPSS One Sample T-Test – Example A scientist from Greenpeace believes that herrings in the North Sea don’t grow as large as they used to. It’s well known that – on average – […]
Independent Samples T-Test SPSS Independent Samples T-Test Independent Samples T-Test Other SPSS T-Test Tutorials SPSS Paired Samples T-Test SPSS One Sample T-Test T-Test Background Tutorials Z-Scores – What and Why? What is a Dichotomous Variable?
