When we calculate a statistic for example, a mean, a variance, a proportion, or a correlation coefficient, there is no reason to expect that such point estimate would be exactly equal to the true population value, even with increasing sample sizes. There are always sampling inaccuracies, or error. In most Six Sigma projects, there are […]

# Tag Archives: Z Confidence Interval

## Six Sigma Confidence Intervals Tutorial

Posted in Tutorials
Also tagged chi-squared, Confidence Interval for a Mean, Confidence Interval for the Difference between Two Means, Confidence Intervals, Confidence Level, Confidence Limits, Six Sigma Z Confidence Intervals for Means, t Confidence Interval, t Confidence Interval for a Variance, Z Confidence Interval for Means, Z Confidence Interval for Proportions
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