Sxx Variance Formula 🔥 Extended

But if we treat (x_i) as (e.g., in observational studies, random sampling from a bivariate population), then (S_xx) is a statistic with a sampling distribution.

where (s_x^2) is the sample variance of (x). sxx variance formula

[ \frac(n-1)s_x^2\sigma_x^2 \sim \chi^2_n-1 ] But if we treat (x_i) as (e