# Confidence interval for standard deviation and variance relationship

### Confidence Intervals for Variances and Standard Deviations

Note that the standard deviation of a sampling distribution is its standard error. If you look closely at this formula for a confidence interval, you will notice that you need to know The first steps are to compute the sample mean and variance. E) Confidence interval for the variance of a normally distributed population. Measures of dispersion. S the population standard deviation, the square root of each term is taken. The result is the formula below. confidence interval for sigma. Jan 25, See a worked out example of how to calculate a confidence interval for a The formula for the (1 - α) confidence interval about the population Of course, since the standard deviation is the square root of the variance, this.

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