Texas Instruments TI-86 User Manual

Page 210

198

Chapter 14: Statistics

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 198 of 14

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.

HIST

(histogram) plots one-variable data. The

xScl

window variable value determines

the width of each bar, beginning at

xMin

ZDATA

(

GRAPH

ZOOM

menu) adjusts

xMin

xMax

yMin

, and

yMax

to include all values, and also adjusts

xScl

. (

xMax

xMin

)

xScl

47 must be

true. A value that occurs on the edge of a bar is counted in the bar to the right.

For the example:
xStat={1 2 2 2 3 8 9 5 6 6 7 7
4 4 9 9 9}

Window variable values:
xMin=0

yMin=0

xMax=10

yMax=5

BOX

(regular box plot) plots one-variable data. The whiskers on the plot extend from

the minimum data point in the set (

xMin

) to the first quartile (

) and from the third quartile

(

) to the maximum point (

xMax

). The box is defined by

Med

(median), and

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.

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

Whiskers are the lines
protruding from the sides of
the box.