下面是结果:
The SAS System 23:30 Tuesday, March 23, 2011 1
The REG Procedure
Model: MODEL1
Dependent Variable: y
Number of Observations Read 7
Number of Observations Used 7
Analysis of Variance
Sum of Mean
Source DF Squares Square F Value Pr > F
Model 1 1500.89286 1500.89286 88.47 0.0002
Error 5 84.82143 16.96429
Corrected Total 6 1585.71429
Root MSE 4.11877 R-Square 0.9465
Dependent Mean 61.42857 Adj R-Sq 0.9358
Coeff Var 6.70498
Parameter Estimates
Parameter Standard
Variable DF Estimate Error t Value Pr > |t|
Intercept 1 32.14286 3.48100 9.23 0.0003
x 1 0.73214 0.07784 9.41 0.0002
从上面可以看出:
(1)拟合的回归直线为y=32.14286+0.73214x
(2)拟合优度R^2为0.9465,修正拟合优度为0.9358.
(3)检验β1是否显著就是指β1是否显著不为零,本题中表示价格水平对供给量是否有显著性影响。观察上面的β1对应的t统计量比较大,p值远远小于0.05,所以显著不为零,就是说价格水平对供给量有显著性影响。