Kaip apskaičiuoti F-Test

Kas yra F-Test?

The F-test for equality of variances tests whether two populations have the same variance. F = s₁²/s₂² (larger variance in numerator). Used as a preliminary test before pooled t-tests.

Žingsnis po žingsnio vadovas

1. 1F = larger variance / smaller variance
2. 2df₁ = n₁−1 · df₂ = n₂−1
3. 3Compare to critical value from F-distribution
4. 4F=1 means equal variances

Worked Examples