When is the Analysis of Variance or ANOVA test used?

Answer 1

Since this is not my area of expertise, I searched Google under the key words "anova test" to get these possible sources:

http://en.wikipedia.org/wiki/Analysis_of_variance
http://www.physics.csbsju.edu/stats/anova.html
http://www.experiment-resources.com/anova-test.html

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps. Thanks for asking.