![]() This is the range of values you expect your estimate to fall between if you redo your test, within a certain level of confidence.Ĭonfidence, in statistics, is another way to describe probability. Frequently asked questions about confidence intervalsĪ confidence interval is the mean of your estimate plus and minus the variation in that estimate.Caution when using confidence intervals.Confidence interval for non-normally distributed data.Confidence interval for the mean of normally-distributed data.Calculating a confidence interval: what you need to know.
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