Variance-ratio F pivot
Theorem taught in Confidence intervals, part of Statistical inference
Variance-ratio F pivot
| Type | Theorem |
| Taught in | Confidence intervals |
| Part | Statistical inference |
For two independent normal samples,
\frac{s_1^2/\sigma_1^2}{s_2^2/\sigma_2^2}
has the F distribution with (n_1-1,\,n_2-1) degrees of freedom.
Used in
- Taught in Confidence intervals, where the derivation and examples are.
- All 6 questions on Confidence intervals
See also
Confidence interval · Pivot · One-sample t pivot · Pooled variance · Two-sample t pivot · Wald interval