The width of a confidence interval for a population variance is of constant width for fixed values of the
sample size and confidence level.

Question

Quizplus · Accepted Answer

The width of a confidence interval for a population variance depends on the sample size and the confidence level. As the sample size increases, the width of the interval decreases. As the confidence level increases, the width of the interval increases. Therefore, the width of a confidence interval for a population variance is not of constant width for fixed values of the sample size and confidence level.

The Width of a Confidence Interval for a Population Variance