Infinite Population
Finite Population
Advanced
Infinite Population
Approximates required sample size assuming a very large population.
| Calculation | Value |
|---|---|
| Confidence Level | 95.00% |
| Z-Score | 1.960 |
| Margin of Error | 5.00% |
| Population Proportion (p) | 50.00% |
| Required Sample Size (approx.) | 385 |
Finite Population
Takes into account a known population size. Utilizes infinite population sample size as base, then applies finite population correction.
| Calculation | Value |
|---|---|
| Confidence Level | 95.00% |
| Z-Score | 1.960 |
| Margin of Error | 5.00% |
| Population Proportion (p) | 50.00% |
| Total Population (N) | 10000.00 |
| Sample Size (approx.) | 370 |
Advanced Calculator
Specify Z-value directly or choose from pre-calculated confidence intervals, plus more advanced margin of error settings.
| Calculation | Value |
|---|---|
| Z-Score Used | 1.960 |
| Margin of Error | 5.00% |
| Population Proportion (p) | 50.00% |
| Sample Size (approx.) | 385 |