For Discussion
You and your students can discuss:
1. Can you tell from the graphs which model fits the best?
2. Engage the trace and press or to move the tracer along the
curve, or from data point to data point. Press or to move from
the curve to the data points, or vice versa. Use this mechanism to find
the error between a predicted Y value (on the regression curve) and a
known Y value for a given X (one of the known points).
Additional Problem
Find the best-fitting regression model for the following data set:
X Y
66 68 60 < X < 75, scale of 1
73 55 50 < Y < 70, scale of 5
63 58
71 59
62 65
69 61
74 60
65 60
63 60
79 49
48 Other Regressions and Model of “Best Fit”/STATISTICS USING THE SHARP EL-9600