Question: For the data set of Exercise 2.22, calculate the interquartile range. In Exercise 2.22 The following data represent the scores of 40 students on a

For the data set of Exercise 2.22, calculate the interquartile range.
In Exercise 2.22
The following data represent the scores of 40 students on a college qualification test (courtesy of R. W. Johnson).

Make a stem-and-leaf display.

162 171 138 145 144 126 145 162 174 178 167 98 161 152 182 136 165 137 133 143 184 166 115 115 95 190 119 144 176 135 194 147 160 158 178 162 131 106 157 154

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