Microsoft Office Tutorials and References
In Depth Information
Fig. 7.4 Regression SUMMARY OUTPUT of SAT vs. FROSH GPA Data
WRITING SCORES, AND MATH SCORES together form a very strong positive
relationship in predicting FROSH GPA.
To find the regression equation, notice the coefficients at the bottom of the
SUMMARY OUTPUT :
Intercept: a (this is the y-intercept)
1.5363
READING SCORE: b 1
0.0006
WRITING SCORE: b 2
0.0003
MATH SCORE:
b 3
0.0021
Since the general form of the multiple regression equation is:
Y
a
b 1 X 1 þ
b 2 X 2 þ
b 3 X 3
(7.2)
¼
þ
we can now write the multiple regression equation for these data:
Y
1.5363 + 0.0006 X 1 + 0.0003 X 2 + 0.0021X 3
¼
Search JabSto ::




Custom Search