1 Variance - Options
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Stat > Basic Statistics > 1 Variance > Options

Specify the confidence level or define the alternative hypothesis.

Confidence level: Enter a confidence level for the confidence interval. Enter any number between 0 and 100, exclusive. The default is 95.

Alternative hypothesis: Enter Standard deviation < hypothesized standard deviation (lower-tailed), Standard deviation hypothesized standard deviation (two-tailed), or Standard deviation > hypothesized standard deviation (upper-tailed). If you choose a lower-tailed or an upper-tailed hypothesis test, an upper or lower confidence bound will be constructed, respectively, rather than a confidence interval.