Which of the following options is INCORRECT?

For k treatments and N observations, the degree of freedom of the ratio of mean sum of square of treatments and residual mean sum is N - 1 and k - 1

For k treatments and N observations the degree of freedom of variation within groups is N - k

Fork treatments and N observations the degree of freedom of total variation is N - 1

Fork treatments and N observations, the degree of freedom of variation between groups is k - 1