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Chapter 6: Statistical Plots
7306ENG.DOC Statistical Plots and Analyses Julie Hewlett Revised: 05/29/98 3:52 PM Printed: 05/19/99 9:00 AM
Page 114 of 20
Adjusting Window Values and Format
If you press * to display all selected stat plots, sometimes
you see a blank screen. Try adjusting your viewing window.
The easiest way to do this is with the (
7:ZoomStat
command. This adjusts the viewing window automatically so
that all points of all turned on stat plots are visible. To adjust
window values manually, press '.
In addition, the calculator automatically selects the
AxesOff
option (- g) for Pictograph, Bar graph, Pie chart stat
plots. However, any other selected options on the - g
screen still apply to stat plots (as they do with function
graphs).
For more information on adjusting
WINDOW
values and
formatting the Graph screen, see Chapter 9: Function
Graphing.
Displaying the Stat Plot
Press * to display a stat plot. (Pressing * also
displays any
Y
n
functions that are defined and selected.) Once
you have a plot displayed, you can press ) and use " and
! to move from point to point.
If you have more than one plot turned on at the same time, you
can trace all the points of each plot. Use $ and # to move
from plot to plot.
Stat Plot Examples
The following examples assume that all
Y
n
functions are
deselected (turned off) (- }
2:Y-Vars
6:FnOff
).
Scatter Plot Scatter Plot Ô
and xyLine Plot and xyLine Plot Ó
Scatter plots (Ô) and xyLine plots (Ó) are especially useful
for plotting data over a period of time to indicate trends. An
xyLine plot (Ó) functions exactly like the Scatter plot, except
that it connects the data points with a line.
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