(* Math Proficiency on Home Reading and TV Viewing *)

colname={y,x1,x2,x3}

(* y = math proficiency

   x1 = % of students with three or more types of reading materials at home

   x2 = % of students that read more than 10 pages per day

   x3 = % of students that watch TV 6 hours or more per day *)



mathtestinfo = {{252, 78, 34, 18}, {259, 73, 41, 12}, {256, 77, 28, 20}, {256,

         68, 42, 11}, {267, 85, 38, 9}, {270, 86, 43, 12}, {261, 83, 32, 

        18}, {231, 76, 24, 33}, {255, 73, 31, 19}, {258, 80, 36, 17}, {231, 

        64, 32, 20}, {251, 69, 36, 23}, {272, 84, 48, 7}, {260, 82, 43, 

        14}, {267, 84, 37, 11}, {278, 88, 43, 8}, {256, 78, 36, 14}, {246, 76,

         36, 19}, {260, 83, 34, 19}, {264, 84, 31, 14}, {276, 88, 36, 

        7}, {280, 88, 44, 6}, {276, 88, 42, 9}, {273, 88, 40, 7}, {269, 84, 

        41, 13}, {256, 72, 40, 11}, {261, 79, 35, 17}, {250, 78, 37, 

        21}, {281, 90, 41, 6}, {264, 84, 36, 11}, {263, 78, 37, 14}, {271, 82,

         41, 9}, {266, 86, 34, 10}, {260, 80, 38, 12}, {258, 70, 34, 

        15}, {218, 76, 23, 27}, {264, 82, 33, 16}, {256, 80, 36, 16}, {274, 

        86, 38, 8}, {272, 86, 43, 7}};