Margin Of Error Calculator
Calculate the margin of error for a survey or experiment given sample size, population proportion, and confidence level.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
Margin of error is a statistic expressing the amount of random sampling error in a survey's results. It represents the range within which the true population parameter is expected to fall.
The formula is MOE = z * sqrt( p̂(1-p̂) / n ), where z is the z-score corresponding to the confidence level, p̂ is the sample proportion, and n is the sample size.
This calculator supports 90% (z=1.645), 95% (z=1.96), and 99% (z=2.576) confidence levels.