. Both lead to the same result, but the second one is usually much easier for manual calculations.
Variance of a chi-squared random variable with (k) df is (2k):
There are two primary ways to write the formula. Both will give you the exact same result, but one is often easier for manual calculations. 1. The Definitional Formula
where (s_x^2) is the sample variance of (x).
. Both lead to the same result, but the second one is usually much easier for manual calculations.
Variance of a chi-squared random variable with (k) df is (2k): sxx variance formula
There are two primary ways to write the formula. Both will give you the exact same result, but one is often easier for manual calculations. 1. The Definitional Formula sxx variance formula
where (s_x^2) is the sample variance of (x). sxx variance formula