Annual comparison of sales between the treatment and control groups
| Treatment group | Control group | t-value | No. of treatment group | No. of control group | |
|---|---|---|---|---|---|
| 1st year | 10.30 | 9.91 | 0.4848 | 20 | 117 |
| 2nd year | 10.12 | 9.60 | 0.5057 | 15 | 102 |
| 3rd year | 11.81 | 9.10 | 2.5658** | 16 | 88 |
| 4th year | 12.39 | 9.72 | 2.0469** | 9 | 64 |
| 5th year | 10.12 | 9.40 | 0.4945 | 10 | 59 |
| Treatment group | Control group | No. of treatment group | No. of control group | ||
|---|---|---|---|---|---|
| 1st year | 10.30 | 9.91 | 0.4848 | 20 | 117 |
| 2nd year | 10.12 | 9.60 | 0.5057 | 15 | 102 |
| 3rd year | 11.81 | 9.10 | 2.5658** | 16 | 88 |
| 4th year | 12.39 | 9.72 | 2.0469** | 9 | 64 |
| 5th year | 10.12 | 9.40 | 0.4945 | 10 | 59 |
Note(s): *** 1% significance level; ** 5% significance level; * 10% significance level
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