12–32 Statistics
82D315~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:36 PM Printed: 10/27/05 2:53
PM Page 32 of 38
Histogram plots one-variable data. The Xscl window variable
value determines the width of each bar, beginning at
Xmin.
ZoomStat adjusts Xmin, Xmax, Ymin, and Ymax to include all
values, and also adjusts
Xscl. The inequality
(
Xmax N Xmin) à Xscl 47 must be true. A value that occurs on
the edge of a bar is counted in the bar to the right.
ModBoxplot (modified box plot) plots one-variable data, like
the regular box plot, except points that are 1.5
ä
ää
ä Interquartile
Range beyond the quartiles. (The Interquartile Range is defined
as the difference between the third quartile
Q3 and the first
quartile
Q1.) These points are plotted individually beyond the
whisker, using the
Mark (› or + or ¦) you select. You can trace
these points, which are called outliers.
The prompt for outlier points is
x=, except when the outlier is
the maximum point (
maxX) or the minimum point (minX).
When outliers exist, the end of each whisker will display
x=.
When no outliers exist,
minX and maxX are the prompts for the
end of each whisker.
Q1, Med (median), and Q3 define the box
(page 12.29).
Box plots are plotted with respect to
Xmin and Xmax, but ignore
Ymin and Ymax. When two box plots are plotted, the first one
plots at the top of the screen and the second plots in the middle.
When three are plotted, the first one plots at the top, the second
in the middle, and the third at the bottom.
Statistical Plotting (continued)
Ò
ÒÒ
Ò
(Histogram)
Õ
ÕÕ
Õ
(ModBoxplot)
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