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Forecasting Causal regression analysis
Input Data Forecast Error Analysis
Period GPA CBAT Forecast Error
Absolute
error
Squared
error
Absolute
% error
Student 1 3.70 690 3.737 -0.037 0.037 0.001 0.99%
Student 2 3.00 610 3.537 -0.537 0.537 0.289 17.91%
Student 3 3.25 480 3.214 0.036 0.036 0.001 1.11%
Slope
0.002
SE 0.290
Problem 11-35
y = 0.0025x + 2.019
2.50
2.70
2.90
3.10
3.50
3.90
4.10
Regression Line
2.50
2.90
3.50
3.90
4.10
Actual vs. Forecast
