QMS 202 Study Guide - Midterm Guide: Effect Size, Studentized Range, Null Hypothesis

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 202
• Professor: Irwin Pressman

Document Summary

To test whether the sample mean is significantly different from the population mean. To independent group have/have not the same mean. Within group variation (vw) if vb > vw group mean are statistically different. H0: the population mean of the question population mean of the question. At least one of the group means is different df. An small (r =. 10) medium (r= . 30) large (r=. 50) (cid:1872)=(cid:1850) (cid:2868) (cid:1850) (cid:2869) (cid:1845)(cid:3025) (cid:3116) (cid:3025) (cid:3117) Main effect of factor 2 (column and row) There are 2 or more factors (iv) or levels. Use it because we could examine interaction effect as well as main effects. Main effect of factor a is the effect of the factor a ignoring all the other factors. There are column main effect and row main effect. An interaction effect exists between factors: when the effect of one factor on dv changes at the different levels of the other factor.