Paano Kalkulahin si F-Test
Ano ang 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.
Step-by-Step na Gabay
- 1F = larger variance / smaller variance
- 2df₁ = n₁−1 · df₂ = n₂−1
- 3Compare to critical value from F-distribution
- 4F=1 means equal variances
Mga Nalutas na Halimbawa
Input
s₁=2.5 (n=10) · s₂=1.8 (n=12)
Resulta
F = 1.93 · df(9,11) · not significant
Variances not significantly different
Handa nang kalkulahin? Subukan ang libreng F-Test Calculator
Subukan ito sa iyong sarili →