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Response rates and Costs by option
| Response rate | Average costs | Incr RR | Incr costs | Cost per additional response | |
|---|---|---|---|---|---|
| Qxx |
0.23 |
£ 3.61 |
0.23 |
£ 3.61 |
£15.71 per response |
| Qpx |
0.29 |
£ 4.96 |
|
|
|
| QQx |
0.31 |
£ 6.15 |
|
|
|
| QpQ |
0.33 |
£ 7.17 |
|
|
|
| QQQ |
0.36 |
£ 8.09 |
|
|
|
| QQq |
0.36 |
£ 7.59 |
|
|
|
| Qpq | 0.42 | £ 6.71 | 0.19 | £ 3.10 | £15.99 per response |
