category: UIUX 360

Margin of Error

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Margin of Error

What is Margin of Error?

Overview

The margin of Error is a criterion, based on sample size, which helps determine your level of confidence in your research findings.

The margin of error is a statistical expression of the amount of random sampling error in the results of a survey. The larger the margin of error, the lower the confidence that the election result will reflect the result of a census of the entire population.

Whenever an incomplete sample of a population is taken the margin of error will be positive and the result is a positive variation in the measure, i.e. the measurement is different.

A margin of error tells you how many percentages points your results will differ from the actual population value.

For instance, a 95% confidence interval with a 4 percent margin of error means that your statistic will be within 4 percentage points of the true population value 95% of the time.

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