X E[U] Var[U]
                  -3                   0                   0
             -2.8125          0.00726974         5.69006e-06
              -2.625            0.017244         2.37349e-05
             -2.4375           0.0304489         5.60393e-05
               -2.25           0.0474202         9.22536e-05
             -2.0625           0.0685278         0.000113889
              -1.875           0.0938981         0.000116062
             -1.6875            0.123425         0.000102911
                -1.5            0.156799         8.06742e-05
             -1.3125            0.193542         5.63765e-05
              -1.125            0.233082         3.54254e-05
             -0.9375            0.274825         2.01521e-05
               -0.75            0.318217         1.03682e-05
             -0.5625            0.362782         4.72311e-06
              -0.375            0.408132         1.75904e-06
             -0.1875            0.453955         3.90791e-07
                   0                 0.5         7.95215e-30
              0.1875            0.546045         3.90791e-07
               0.375            0.591868         1.75904e-06
              0.5625            0.637218         4.72311e-06
                0.75            0.681783         1.03682e-05
              0.9375            0.725175         2.01521e-05
               1.125            0.766918         3.54254e-05
              1.3125            0.806458         5.63765e-05
                 1.5            0.843201         8.06742e-05
              1.6875            0.876575         0.000102911
               1.875            0.906102         0.000116062
              2.0625            0.931472         0.000113889
                2.25             0.95258         9.22536e-05
              2.4375            0.969551         5.60393e-05
               2.625            0.982756         2.37349e-05
              2.8125             0.99273         5.69006e-06
                   3                   1                   0