PSY201H1 Lecture Notes - Lecture 11: Null Hypothesis, Effect Size, Statistical Hypothesis Testing
Document Summary
Chapter 11: the t test for 2 related samples. Understand the structure of a research study that produces data appropriate for a repeated measures t hypothesis test. Use the repeated measures t test to test hypotheses about the mean difference between 2 treatment conditions. Evaluate the magnitude of the mean difference by computing either cohen"s d or r2. Understand the relative advantages and disadvantages of repeated measures studies compared to independent measures studies, and should recognize the situations where each type of study is appropriate. The related-samples hypothesis test allows researchers to evaluate the mean difference between two treatment conditions using the data from a single sample. In a repeated-measures design, a single group of individuals is obtained and each individual is measured in both of the treatment conditions being compared. Thus, the data consist of two scores for each individual. This eliminates individuals difference (age, gender, background etc)
