PSYC 203 Study Guide - Final Guide: Rho, Conscientiousness, Bonferroni Correction
1 May 2017
School
Department
Course
Professor
Document Summary
Appropriate use (i. e. , research design: used to evaluate mean differences between two or more groups; (groups can be experimentally created or naturally occurring) Null hypothesis for the f test: there is no difference among the means for the three different groups. If the null is true -- the size of treatment effect is basically zero, variation is just normal variation in the dv, f is near to 1. 00: denominator of the f-ratio is sometimes called the error term. Post-hoc tests: follow up to a significant anova to test each pair of mean differences for statistical significance, compare two groups and are much like the independent samples t test with adjustments for type. Graphing interactions: crossover (looks like an x, lines are not parallel so there is likely an interaction, spreading (looks like a v, lines are not parallel so there is likely an interaction, parallel lines = no interaction.
