The degrees of freedom in the calculation of the population variance is n -- 1.
举一反三
- In determining an interval estimate of a population mean when σ is unknown, we use a t distribution with n - 1 degrees of freedom.
- The degrees of freedom for the F test in a one-way ANOVA are:
- If the degrees of freedom in a t-distribution become very large, _______.
- For an F distribution, the number of degrees of freedom for the numerator
- The sample variance is an unbiased estimator of the population variance.