Statistics 101: Confidence Intervals, Estimating Sample Size Needed

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Statistics 101: Estimating Sample Size Requirements.

When constructing confidence intervals we usually choose the sample size, and alpha level, and are given/assume a population standard deviation. In this video, we learn what sample size would be required if we want a level of confidence given a margin of error of our choosing. So we rearrange the terms that comprise the margin of error to achieve this. This video contains 4 brief example problems so you can see applications and the relationships between all of the parts of the margin of error. Enjoy!

My playlist table of contents, Video Companion Guide PDF documents, and file downloads can be found on my website: https://www.bcfoltz.com

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