Elliot Tanis
June 12, 2006
Example 3.1-5  (Example_3_1-5.mws)

 > X := Example_3_1_5;

 > Min(X), Max(X);

 > StemLeaf(X,1); #The 1 specifies 1-digit leaves

`   Stem   Leaf`

`     3  | 4 8`

`     4  | 2 2 5 7`

`     5  | 1 2 4 7 8 8 9`

`     6  | 0 1 3 5 5 6 7 8 9 9`

`     7  | 0 1 1 2 3 3 4 5 5 6 6 7 9`

`     8  | 1 1 2 3 3 4 4 5 7`

`     9  | 0 1 3 3 7NULL`

For some unknown reason, the word NULL appears at the end of the Stem-and-Leaf diagram. Just ignore it.

 > StemLeaf(X,1,14); #The 14 specifies the number of rows.

`   Stem   Leaf`

`     3* | 4`

`     3+ | 8`

`     4* | 2 2`

`     4+ | 5 7`

`     5* | 1 2 4`

`     5+ | 7 8 8 9`

`     6* | 0 1 3`

`     6+ | 5 5 6 7 8 9 9`

`     7* | 0 1 1 2 3 3 4`

`     7+ | 5 5 6 6 7 9`

`     8* | 1 1 2 3 3 4 4`

`     8+ | 5 7`

`     9* | 0 1 3 3`

`     9+ | 7NULL`

Here is the five-number summary of the data.

 > Min(X), Percentile(X, 1/4), Percentile(X, 1/2), Percentile(X, 3/4), Max(X);

 > BoxPlot(X);

Figure 3.1-3: Box plot of scores from 50 statistics examinations

 >