Control   Randomized
    0      15.54     15.90
    1       2.00      1.19
    2      -2.67     -2.44
    3       1.56      1.84
    4      -2.70     -2.92
    5       2.46      2.23
    6      -4.43     -4.42
    7       2.11      1.85
    8       0.05      1.16
    9       4.73      3.02
   10      -3.92     -3.87
   11       2.70      2.41
   12      55.71     53.94