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

6358

7159

6265

6961

7460

6560

6360

7949

48Other Regressions and Model of “Best Fit”/STATISTICS USING THE SHARP EL-9600

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Image 52
Sharp EL-9600 manual Additional Problem