Glossary

F ratio	is the ratio of the mean square between groups estimate and mean square within groups estimate. If the null hypothesis is true, this ratio will be 1.



F test	indicates if there is difference between at least two and possibly more of the groups such that the null hypothesis can be rejected. It does not indicate where the difference lies.



HSD	is a post-hoc test. The HSD stands for honestly significant difference. It is used to compare sample means when an analysis of variance leads to a significant F. It reveals how far apart the sample means must be in order to be significantly different.



Mean square	is a variance estimate and it is the average of the squared deviation scores used to calculate the variation.



One-way analysis of variance	is a test of the null and research hypotheses when the research design involves a comparison of three or more levels of one independent variable.



Post-hoc test	is a test performed if the F ratio is significant to determine where the significant difference(s) lie. Post hoc is Latin for "after the fact."



Source table	is a table that displays the source of variation, sums of squares, degrees of freedom, mean squares, the F ratio, and p value.



Sum of squares	is similar to the sum of deviation scores.

2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.