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