Sample Size Calculator Descriptive Statistics
Below is a comprehensive table covering sample size calculations and descriptive statistics concepts.
1. Sample Size Calculation Table
| Population Size (N) | Confidence Level 90% (Z=1.64) Margin ±5% | Confidence Level 95% (Z=1.96) Margin ±5% | Confidence Level 99% (Z=2.58) Margin ±5% |
|---|---|---|---|
| 100 | 49 | 80 | 99 |
| 500 | 81 | 217 | 286 |
| 1,000 | 88 | 278 | 400 |
| 5,000 | 94 | 357 | 660 |
| 10,000 | 96 | 370 | 910 |
| 50,000 | 97 | 382 | 1,045 |
| 100,000+ (Large Pop) | 98 | 384 | 1,057 |
Key Notes:
- The larger the population, the smaller the additional sample size needed.
- A sample size of ~384 is enough for 95% confidence in large populations.