Data Collectionhard
0:00.0
A state implements a worker training program in Year 2, affecting only firms in the treatment county. Mean worker productivity (output per worker) is:
| Year | Treatment County | Control County |
|------|-----------------|----------------|
| Year 1 | 80 | 82 |
| Year 2 | 84 | 83 |
| Year 3 | 88 | 86 |
Assuming parallel trends (both counties would move together absent the program), the difference-in-differences estimate of the Year 2 treatment effect is:
A state implements a worker training program in Year 2, affecting only firms in the treatment county. Mean worker productivity (output per worker) is:
| Year | Treatment County | Control County | |------|-----------------|----------------| | Year 1 | 80 | 82 | | Year 2 | 84 | 83 | | Year 3 | 88 | 86 |
Assuming parallel trends (both counties would move together absent the program), the difference-in-differences estimate of the Year 2 treatment effect is: