Texas Instruments TI-89 Titanium User Manual page 545

Histogram
This plots one-variable data as a histogram. The x axis is divided into equal widths called
buckets or bars. The height of each bar (its y value) indicates how many data points fall
within the bar's range.
• When defining the plot,
you can specify the
(default is 1)
Bucket Width
to set the width of each
bar.
• A data point at the edge of
a bar is counted in the bar
to the right.
• („
ZoomData
and to include all data points, but it does not adjust the y axis.
xmax
Use 8 $ to set
-
in the tallest bar.
Statistics and Data Plots
Number of bars
Hist.
from the Graph screen, Y= Editor, or Window Editor) adjusts
9
ymin = 0
xmax – xmin
=
--------------------------------------------- -
Hist. Bucket Width
xmin + Hist. Bucket Width
xmin
and = the number of data points expected
ymax
xmin
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