ANOVA Output Questions
1) Does the "Prob." column refer to a probability that the computed F value is correct, or to a probability that the null-hypothesis was wrong, or something else?
2) How do I interpret the F value in the "overall test of model" section? I guess there are two sub-questions here:
a) How to I convert the F-value into a statement about whether the treatments had a statistically significant impact on the measured value (i.e. do I need to refer to an F-table, or is there something in the program that does that)?
Since I am doing a test with 3 factors, what does the overall test mean?
3) In the section "Test of effects...", do I understand correctly that those F-values tell me about the signiifance of the individual factors and their interactions?
4) The "Df" column in my "Test of effects..." section is all ones, although I have up to 15 data values in each cell. Does the Df in this case equal #levels-1, instead of N-1?
Thanks for your help,