1. Using SPSS for Simple Regression
UDP 520 Lab 6
Lin Lin
November 27th, 2007

2. Outline Dataset Using SPSS for Simple Regression
Using SPSS for OLS test

3. Dataset – WLTP
1000 adults aged 18+ (males and females) were recruited to study the effectiveness of Weight Loss Training Program (WLTP)
Variables
Sex (female=1)
BMI_1(before WLTP)
BMI_2(after WLTP)
Urban or suburban (urban=1)
Overweight_1 (overweight before WLTP) (overweight=1)
Overweight_2 (overweight after WLTP) (overweight=1)

4. Research Question How does BMI_2 relate to BMI_1?
Predict BMI after people participated WLTP.

5. Analysis
Simple regression
Where y : BMI_2
x1: BMI_1

6. Using SPSS for Regression Analysis

7. SPSS Output

8. SPSS Output (cont.)

9. Using SPSS for OLS Test

10. SPSS Output (OLS Test)

11. Interpreting Estimated Coefficient
With every 1 BMI_1 increases, BMI_2 will increases by
We could understand this way: if the difference of BMI_1 of Person A and person B is 1, the difference of BMI_2 of these two person will be [The result suggests that people with lower BMI will lose more weight (assuming the heights of the people stay the same during the period of WLTP).]