Regression vs ANOVA

#1
How would you determine whether to use ANOVA or multiple regression? What about the data or the situation of a research topic would be the deciding factors?

Thanks a bunch!!!!
 
#2
Diane,

ANOVA allows us to see if differences in the variable of interest between groups are due to chance, or if there is a significant group effect. It tells us very little about the nature of that relationship. All we know is whether a significant difference exists between groups.

Regression gives much more information. It tells us if there is a difference, where the differences lie, and we can predict to what degree the group causes changes in the dependent variable.