伍sir啊,统计是俺家不记事吃饭的家伙,他可不能忘。。。 .J1Hg
H(%] Os
三次方的模型其实 fit 的非常好,p 值很小很小,estimates 的值如下: ?;.1fJU>
?,i#B'Z^
Call:
#8Id:56
lm(formula = V3 ~ V1 + I(V1^2) + I(V1^3), data = a) 02# b:
o7@4=m}
Residuals: E-tNB{r@
Min 1Q Median 3Q Max ^qId]s
-14085.3 -7779.8 -689.7 7941.2 16891.5 ?ck^? p7
@8Q+=abz
Coefficients: y
8d`},
Estimate Std. Error t value Pr(>|t|) o+X'(!Trw
(Intercept) -8.367e+05 9.471e+04 -8.835 3.07e-13 ***
'QekQ];
V1 8.584e+03 6.063e+02 14.159 < 2e-16 *** P/gb+V=g!
I(V1^2) -1.945e+01 1.256e+00 -15.491 < 2e-16 *** u\1Wkxj
I(V1^3) 1.267e-02 8.436e-04 15.018 < 2e-16 *** @]ptY*
--- iu6WGmR
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 o trTrh
}^GV(]K
Residual standard error: 8724 on 75 degrees of freedom BJO~$/R?v
Multiple R-squared: 0.9952, Adjusted R-squared: 0.995 :AqnWy
F-statistic: 5175 on 3 and 75 DF, p-value: < 2.2e-16