Exercise 1.3

1.

Obtain a dot plot of the weights of the twenty students discussed above and listed again as :

 Weights
      122
      146
      65
      162
      148
      155
      136
      151
      151
      153
      201
      156
      235
      157
      160
      171
      178
      197
      142
      131

2.

For Carrie's baseball data, obtain comparison dotplots of the batting averages (6th column of the data for the hitters only, (signified by a 1 in the 5th column)) by the side of the plate they hit from R, L or Switch, signified by a 1, 2 or 3 in column 3.

3.

Obtain comparison dotplots of the the Etruscan and Italian data, Etruscan-Italian Data. Note that the Etruscans formed an ancient civilization in Truscany, Northern Italy, that predated the Romans. There is some question as to where the Etruscans came from. Were they native to Italy or not? Draw conclusions about this mystery based on the comparison dotplots.

4.

Obtain stem-leaf plots and comparison boxplots for the following 3 samples. Comment on the shape of each.

S1    S2    S3
 76    66    59
183     9    54
125    62    19
 24    21    79
  8    11    22
 59    39    81
 25    21    18
179    24    67
 29    21    61
101    19    53
 55    67    71
108    71    14
 68    67    10
128     0    87
  5     4    76
 12    82    49
 35    32    21
 25    91    16
122   152    35
 39   124    11
 59    20     7
 91   108    77
 90     5    90
 81    63     6
 66     1    79
 20    10    55
178    23    83
111   125    28
186    59    11
 26    25    60

2000-08-26