| Period | N | Mini | Maxi | Mean | Std. error Mean | Std. Deviation | Variance |
Return on assets (ROA) | Pre | 6 | 2.83 | 4.85 | 3.7067 | 0.27908 | 0.68360 | 0.467 |
Post | 6 | 3.39 | 6.62 | 4.7017 | 0.57313 | 1.40389 | 1.971 |