PSY 340 Study Guide - Midterm Guide: Repeated Measures Design, Null Hypothesis, F-Distribution
Document Summary
Exam 3 will be based on the following chapters: 9, 10, 11, 12. This is just a guide, read the assigned chapters. Also, keep in mind that all statistics is partially-cumulative (i. e. , you will see concepts covered before in other chapters such as mean, standard deviation etc. ) The t statistic is used instead of a z-score for hypothesis testing when the population standard deviation (or variance) is unknown. Study design features (the independent-measures t statistic uses the data from 2 separate samples to draw inferences about the mean difference between 2 populations or between 2 different treatment conditions) Uses for repeated-measures t tests (advantages and disadvantages of a repeated-measures design: repeated-measures versus independent-measures designs. When to use, and why not use multiple t tests. F distribution: shape, and properties (all scores are positive; scores pile up around 1) Finding out from df the number of groups and /or participants. Post hoc tests: when to use and why.
