Power Calculator: Sample Size Proportion with E
Introduction & Importance
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How to Use This Calculator
- Enter the desired power level (between 0.5 and 0.99).
- Enter the significance level (alpha, between 0.01 and 0.1).
- Enter the expected effect size (between 0.1 and 1).
- Enter the proportion of the population (between 0.01 and 0.99).
- Click ‘Calculate’ to see the results.
Formula & Methodology
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Real-World Examples
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Data & Statistics
| Power | Sample Size |
|---|---|
| 0.5 | 384 |
| 0.7 | 784 |
| 0.9 | 2704 |
| Effect Size | Sample Size |
|---|---|
| 0.1 | 10000 |
| 0.3 | 333 |
| 0.5 | 125 |
Expert Tips
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Interactive FAQ
What is power in statistics?
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How do I interpret the results?
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