Sample Size Mean Margin
Calculator
Required sample size
34.5744
Results
- Required sample size
- 34.5744
- Required sample size (rounded)
- 35
Statistical results
| Required sample size | 34.5744 |
| Required sample size (rounded) | 35 |
formula-map diagram
- Required sample size
- 34.5744
- Required sample size (rounded)
- 35
Statistical relationship
Formula
n = (z × σ / E)²= 34.5744
Note
This is a simplified model: it applies the displayed standard formula to the summary values you entered and assumes their underlying conditions (independence, normality, correct sampling) hold. It does not analyse a real data set. Check the assumptions before relying on the result.