O'Reilly logo

Statistics for Six Sigma Green Belts with Minitab and JMP by David M. Levine

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

6.2. Basic Concepts of Confidence Intervals

The development of the sampling distribution of the statistic of interest is crucial for being able to use the sample statistic to draw a conclusion about a population parameter. However, the results of a sample statistic, such as the mean, computed from a single sample, provides only a point estimate of the population parameter. The point estimate is a single value and will almost certainly be different if you select a different sample. Thus, statisticians have developed an interval estimate in which you estimate the value of the characteristic for the entire population with a specific degree of certainty with a lower and upper limit.

To develop the concept of the interval estimate, return to the example ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required