| If the size of the test mailing is | And the return on the test mailing is | Then 95 chances out of 100, the return on the identical mailing on the whole list will be between | If the size of the test mailing is | And the return on the test mailing is | Then 95 chances out of 100, the return on the identical mailing on the whole list will be between | |
| 100 | 1% | 0 & 2.99% | 250 | 1% | 0 & 2.26% | |
| 100 | 2% | 0 & 4.80% | 250 | 2% | 0.23% & 3.77% | |
| 100 | 3% | 0 & 6.41% | 250 | 3% | 0.84% & 5.16% | |
| 100 | 4% | 0.08% & 7.92% | 250 | 4% | 1.52% & 6.48% | |
| 100 | 5% | 0.64% & 9.36% | 250 | 5% | 2.24% & 7.76% | |
| 100 | 10% | 4.00% & 16.00% | 250 | 10% | 6.20% & 13.80% | |
| 100 | 20% | 12.00% & 28.00% | 250 | 20% | 14.94% & 25.00% | |
| 500 | 1% | 0.11% & 1.89% | 1,000 | 1% | 0.37% & 1.63% | |
| 500 | 2% | 0.75% & 3.25% | 1,000 | 2% | 1.12% & 2.88% | |
| 500 | 3% | 1.48% & 4.52% | 1,000 | 3% | 1.92% & 4.08% | |
| 500 | 4% | 2.25% & 5.75% | 1,000 | 4% | 2.76% & 5.24% | |
| 500 | 5% | 3.05% & 6.95% | 1,000 | 5% | 3.62% & 6.38% | |
| 500 | 10% | 7.32% & 12.68% | 1,000 | 10% | 8.10% & 11.90% | |
| 500 | 20% | 16.42% & 23.58% | 1,000 | 20% | 17.48% & 22.52% | |
| 2,000 | 1% | 0.55% & 1.45% | 5,000 | 1% | 0.72% & 1.28% | |
| 2,000 | 2% | 1.37% & 2.63% | 5,000 | 2% | 1.60% & 2.40% | |
| 2,000 | 3% | 2.24% & 3.76% | 5,000 | 3% | 2.52% & 3.48% | |
| 2,000 | 4% | 3.12% & 4.88% | 5,000 | 4% | 3.45% & 4.55% | |
| 2,000 | 5% | 4.03% & 5.97% | 5,000 | 5% | 4.38% & 5.62% | |
| 2,000 | 10% | 8.66% & 11.34% | 5,000 | 10% | 9.15% & 10.85% | |
| 2,000 | 20% | 18.21% & 21.70% | 5,000 | 20% | 18.87% & 21.13% | |
| 10,000 | 1% | 0.80% & 1.20% | 100,000 | 1% | 0.94 & 1.06% | |
| 10,000 | 2% | 1.72% & 2.28% | 100,000 | 2% | 1.91% & 2.09% | |
| 10,000 | 3% | 2.66% & 3.34% | 100,000 | 3% | 2.89% & 3.11% | |
| 10,000 | 4% | 3.12% & 4.39% | 100,000 | 4% | 3.88% & 4.12% | |
| 10,000 | 5% | 4.56% & 5.44% | 100,000 | 5% | 4.86% & 5.14% | |
| 10,000 | 10% | 9.40% & 10.60% | 100,000 | 10% | 9.81% & 10.19% | |
| 10,000 | 20% | 19.20% & 20.80% | 100,000 | 20% | 19.75% & 20.25% |
Trainee Development – Platinum
Practicing Certificate – Development
