quiz1  quiz2  gender  height  parents
   7      8       F    64.4     64.4
   9      8       F    68.0     69.0
   9     11       F    64.0     62.0
  10      9       M    71.0     68.0
   9     11       F    64.8     60.0
  11      8       F    68.8     60.0
   6     10       F    60.0     68.0
   5     10       F    69.0     71.0
   6     10               *        *
   8     10       F    61.5     67.0
   8     11       M    70.0     70.0
   6      7       F    63.2     63.2
   8     11       M    69.6     68.0
   8     13       M    69.6     69.2
  13     12       F    61.2     64.0
  12     11       F    66.4     63.2
  14     14       F    66.8     66.0
  11      7       F    63.0     62.0
  10     10       F    62.0     63.0
   9      8       F    62.0     66.0
   6     11       M    65.0     70.0
   9     12       M    68.0     72.0
  10      9       F    64.8     64.8
   7      9       F    66.0     62.8
   5      7       F    72.0     70.0
   6      9       M    66.0     67.0
   9      8       F    65.0     62.0
   5      9       M    73.0     70.0
   6      7       F    68.0     67.0
   8     12       M    72.4     72.4
  10     11       F    65.2     64.0
   8      9       F    62.0     63.0
   8      9       F    70.0     62.0
   7      8       F    67.0     69.0
  11     12       M    72.0     70.0
   5     10       F    66.0     62.0
  11     11       M    69.6     66.0
   9      9       F    62.0        *
  11     11       F    62.0     66.0
  11     14       F    64.4     63.2
  11      9               *        *
  10      9               *        *
   9      9               *        *
   7      9       M    77.0     74.0
   9     11       F    59.0     58.0
   7     11       F    61.2     63.2
  10     12               *        *
   5      9       F    67.0     69.0
   9     11       M    73.0     70.0