<Dl> <Dd> F = between - group variability within - group variability . (\ displaystyle F = (\ frac (\ text (between - group variability)) (\ text (within - group variability))).) </Dd> </Dl> <Dd> F = between - group variability within - group variability . (\ displaystyle F = (\ frac (\ text (between - group variability)) (\ text (within - group variability))).) </Dd> <P> The "explained variance", or "between - group variability" is </P> <Dl> <Dd> ∑ i = 1 K n i (Y _̄ i ⋅ − Y _̄) 2 / (K − 1) (\ displaystyle \ sum _ (i = 1) ^ (K) n_ (i) ((\ bar (Y)) _ (i \ cdot) - (\ bar (Y))) ^ (2) / (K - 1)) </Dd> </Dl>

What are the uses of f-statistic and t-statistic in regression analysis