Operation Manual

Statistics 12-19
8212STAT.DOC TI-82, Chapter, English Bob Fedorisko Revised: 02/09/01 9:23 AM Printed: 02/09/01
12:42 PM Page 19 of 22
Boxplot
Boxplot
plots one-variable data. The whiskers on the plot extend from the
minimum data point in the set (
minX
) to the first quartile (
Q
1
) and from the
third quartile (
Q
3
) to the maximum point (
maxX
). The box is defined by
Q
1
,
the median (
Med
), and
Q
3
. (page 12
.
14)
Box plots ignore
Ymin
and
Ymax
, but are plotted with respect to
Xmin
and
Xmax
. When two box plots are plotted, the first plots in the middle and the
second plots in the bottom. When three box plots are plotted, the first plots
on the top and the third plots on the bottom.
Histogram
Histogram
plots one-variable data.
Xscl
determines the width of each bar,
beginning at
Xmin
.
ZoomStat
adjusts
Xmin
and
Xmax
to include all values,
but does not change
Xscl
.
(Xmax–Xmin)
à
Xscl
must be

47. A value
occurring on the edge of a bar is counted in the bar to the right.