If you are wondering what the viewing window is press WINDOW:
You should see the following on your screen:
So Xmin = -2.5, etc. You could change this viewing window by typing in any values you
wish. To obtain the window used in Figure 17(b), we would let Xmin = -10, Xmax =
110, Xscl = 10, Ymin = 62, Ymax = 78, Yscl = 2. Make these changes, then press
GRAPH to obtain the scatter diagram.
EXAMPLE 4 FINDING THE LINE OF BEST FIT
With the data from Example 1, find the line of best fit using a
graphing utility.
Solution
First, we enter the data into the graphing utility in the STAT menu. This is
done in Example 1. We then execute
the Linear Regression option on a TI-
WINDOW
GRAPH
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