What does the F-distribution in ANOVA mean?
ANOVA (Analysis of variance) is an statistical methods used when we want to see if some treatment or strategy has produced any significant effect on the outcome or not. One-way ANOVA is used when only one factor is being tested. Two-way ANOVA is used when two factors are being tested at once. For the ANOVA, something called as a F-value is calculated by the following formula: F v a l u e = S S B S S W where, SSB = sum of squares between groups SSW = sum of squares within groups Also, based on the degrees of freedom within and between the groups, a F-critical value and a P-value is obtained. If the calculated F-value is greater than the F-critical value it is inferred that the treatment of strategy has statistically significant effect on the outcome. The P value is the probability of F-values to be greater than or equal to the calculated F-value if there was no effect o...