A subscription service has two churn models, P and Q. To decide where next quarter's budget goes, the team trained each one on growing slices of the training data and recorded accuracy on the rows it trained on and on a fixed validation set:
| training rows | 500 | 1,000 | 2,000 | 4,000 | 8,000 |
|---|---|---|---|---|---|
| P: training | 0.75 | 0.73 | 0.72 | 0.71 | 0.71 |
| P: validation | 0.66 | 0.68 | 0.69 | 0.70 | 0.70 |
| Q: training | 1.00 | 0.99 | 0.98 | 0.97 | 0.96 |
| Q: validation | 0.61 | 0.69 | 0.75 | 0.79 | 0.83 |
Each model can get one of two improvements:
Which plan does the evidence support?
Select all that apply.