| Period | N | Mini | Maxi | Mean | Std. error Mean | Std. Deviation | Variance |
CAR | Pre | 6 | 13.84 | 19.84 | 17.195 | 0.981 | 2.403 | 5.775 |
Post | 6 | 17.81 | 19.27 | 18.342 | 0.221 | .540 | 0.292 |