Question

A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 ​respondents, 14​% chose chocolate​ pie, and the margin of error was given as plus or minus5 percentage points. Describe what is meant by the statement that​ "the margin of error was given as plus or minus5 percentage​ points".

Answer 1

Answer:

9% - 19% is the estimated number of people liking the chocolate pie

Explanation:

The margin of error is an estimated number of percentage surrounding a guess. In a representative survey or a poll ( done in order to guess something about the whole population), there is always some uncertainty as only a limited number of people are asked to state their opinion.

The 14% in the above study is only an estimated number because only 2000 people were asked. Using a specific formula, the margin of error of plus minus 5% was established, it means that to be sure this poll is valid, one must add or subtract the 5%.