Sas Programming
Autor: yixinwang • January 20, 2016 • Course Note • 4,394 Words (18 Pages) • 1,070 Views
Name: Yixin Wang
G25050287
1. What is the population Regression function? (“GNP” is dependent, and “Invest,” “CPI” and “Interest” are independent)
Parameter Estimates
Parameter Standard
Variable DF Estimate Error t Value Pr > |t|
Intercept 1 -529.60744 18.04051 -29.36 <.0001
Invest 1 1.32541 0.12318 10.76 <.0001
CPI 1 14.18311 0.38217 37.11 <.0001
Interest 1 6.54153 3.05829 2.14 0.0557
Y = α + β1X1 + β2X2 + β3X3 + u
Y = -529.607+ 1.325 (X1) +14.183(X2) + 6.541(X3) + u
Note however that the coefficient for X3 is insignificant
proc reg data=exmpl;
model GNP=Invest CPI Interest;
run;
2. Is this regression function significant overall (state the null and alternative hypotheses and explain how you reached that conclusion)?
Analysis of Variance
Sum of Mean
Source DF Squares Square F Value Pr > F
Model 3 7625333 2541778 10368.1 <.0001
Error 11 2696.68581 245.15326
Corrected Total 14 7628029
H0: β1=β2=β3= 0 | None of the independent variables offer any predictability of the dependent variable in the population. |
HA: NOT (β1=β2=β3= 0) | At least one of the independent variables offer some predictability of the dependent variable in the population. |
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