Texas Instruments TI-86 - Manual (Page 209)

Chapter 14: Statistics
197
14STATS.DOC TI-86, Chap 14, US English Bob Fedorisko Revised: 02/13/01 2:33 PM Printed: 02/13/01 3:04 PM Page 197 of 14 14STATS.DOC TI-86, Chap 14, US English Bob Fedorisko Revised: 02/13/01 2:33 PM Printed: 02/13/01 3:04 PM Page 197 of 14
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xyLINE is a scatter plot in which the data points are plotted and connected in order of
appearance in Xlist Name and Ylist Name . You may want to use SortA or SortD from the LIST
OPS menu (Chapter 11) to sort the lists before you plot them.
For the example:
xStat={1 2 3 4 5 6 7 8 9 10}
yStat=5 sin(xStat)
Window variable values:
xMin=0
yMin= L 10
xMax=10 yMax=10
¯
MBOX (modified box plot) plots one-variable data, like the regular box plot, except that
the points are 1.5 ¹ Interquartile Range beyond the quartiles. (The Interquartile Range is
defined as the difference between the third quartile
Q 3 and the first quartile Q 1 .) These
points are plotted individually beyond the whisker, using the Mark ( › or + or ¦ ) you select.
For the example:
xStat={1 2 2 2.5 3 3.3 4 4 2 6 9}
Window variable values are
set by selecting ZDATA from
the GRAPH ZOOM menu.
You can trace these points, which are called outliers. When outliers exist, the end of each
whisker will display an
x= prompt. When no outliers exist, xMin and xMax are the prompts for
the end of each whisker. Q 1 , Med (median), and Q 3 define the box.
Modified box plots are plotted with respect to xMin and xMax , but ignore yMin and yMax .
When two modified box plots are plotted, the first one plots at the top of the screen and the
Whiskers are the lines
protruding from the sides of
the box.