The program will draw one to three boxplots from data stored
 in lists.  Then display the 5-number summary for each.




First enter data in the list named Box1 by using the edit list 
menu. If a second data set is to be examined enter data into
the list Box2 and if wanted, the same for a third data set in 
the list Box3.

Run the program BoxPlot;  it reminds you that data must be in
lists Box1, and or Box2, and or Box3.  Select number of box
plots 1, 2, or 3.  The plots are drawn using a common method
of textbooks.  You will want to check the 5-number summary
and compare it to your text.  Out-liers are plotted as dots and
inner fences are marked as vertical lines using the 1.5 IQR rule.
Whiskers are drawn to the data points first inside the fences. 
Outliers are sometimes covered by the fences because of the
size of the screen.  The sub-programs zbox1 through zbox6 
do the calculations for the 5-number summary as well as 
plotting the line structure.  I have included three lists of data
to set the lists Box1 etc. in your calculator.  List Box4 will be 
generated by the program and used for storage during 
calculations.