PSY 4930 Chapter Notes - Chapter 10: Statistical Parameter, Effect Size
Document Summary
Chapter 10: only the lonely, the one-sample z-test. Used to compare a sample mean to a population mean. How to compute the standard error mean (sem): = population average = mean of sample. When you want to compare a sample mean with a population parameter. A measure of the magnitude of difference between 2 groups, usually calculated as cohen"s d. Gives us an idea about the relative positions of the one group to another. Guidelines for interpretation: small effect ranges from 0 to 0. 2, medium effect ranges from 0. 2 to 0. 5.
.jpg)
