This preview shows page 1. Sign up to view the full content.
Unformatted text preview: level of significance: The level of significance is the alpha level, which measures the probability of a Type I error. critical region: The critical region consist of outcomes that are very unlikely to be obtained if the null hypothesis is true. The term very unlikely is defined by . test statistic: A statistic that summarizes the sample data in a hypothesis test. The test statistic is used to determine whether or not the data are in the critical region. beta (): Beta is the probability of a Type II error. directional (onetailed) test: A directional test is a hypothesis test that includes a directional prediction in the statement of the hypotheses and places the critical region entirely in one tail of the distribution. effect size: A measure of the size of the treatment effect that is separate from the statistical significance of the effect. power: The probability that the hypothesis test will reject the null hypothesis when there actually is a treatment effect....
View
Full
Document
This note was uploaded on 04/08/2011 for the course PSY 216 taught by Professor Cynthiaingle during the Spring '11 term at KCTCS.
 Spring '11
 CynthiaIngle
 Psychology

Click to edit the document details