|
||||||||||||||||||||||||||||||||||||||||
|
Sample size
|
Percentage observed
|
|||
|
20 or 80
|
30 or 70
|
40 or 60
|
50
|
|
| 200 | +/-5.6% | +/-6.4% | +/-6.5% | +/-6.9% |
| 300 | +/-4.5% | +/-5.2% | +/-5.6% | +/-5.7% |
| 500 | +/-3.5% | +/-4.0% | +/-4.5% | +/-4.4% |
| 1000 | +/-2.5% | +/-2.8% | +/-3.0% | +/-3.1% |
| 1900 | +/-1.8% | +/-2.1% | +/-2.2% | +/-2.2% |
| 10,000 | +/-0.8% | +/-0.9% | +/-1% | +/-1% |