Testing the Difference between Two Variances

Characteristics of F Distribution
1. The values of F cannot be negative, because the variances are always positive or zero.
2. The distribution is positively skewed
3.The mean value of F is approximately equal to 1
4. The F distribution is a family of curves bases on the degrees of freedom of the variance of the numerator and the degree of freedom of the variance of the denominator.

C.Ordoyo