* Midterm Grade;
data midgrade;

midterm    homework    final
----------------------------
   68         60         75
   49         94         63
   60         91         57
   68         81         88
   97         80         88
   82         92         79
   59         74         82
   50         89         73
   73         96         90
   39         87         62
   71         86         70
   95         94         96
   61         94         76
   72         94         75
   87         79         85
   40         50         40
   66         92         74
   58         82         70
   58         94         75
   77         78         72