Statistics Tip of the Week: The Margin of Error is 1/2 the width of a 2-sided Confidence Interval
In the July 18, 2017 Statistics Tip of the Week, we showed how a Confidence Interval is calculated. As illustrated in the concept flow diagram below,
Based on this, we might summarize the results of the test by saying "With a 95% Level of Confidence, we estimate the Mean height to be 175 centimeters, with a Margin of Error of plus or minus 5 cm."
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Andrew A. (Andy) Jawlik is the author of the book, Statistics from A to Z -- Confusing Concepts Clarified, published by Wiley.