伍sir啊,统计是俺家不记事吃饭的家伙,他可不能忘。。。 jp-(n z\
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三次方的模型其实 fit 的非常好,p 值很小很小,estimates 的值如下: be6`Sv"H
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Call: GWx?RIKF
lm(formula = V3 ~ V1 + I(V1^2) + I(V1^3), data = a) Ow0~sFz
LW
o )x
Residuals: _)CCD33$
Min 1Q Median 3Q Max D<Z\6)|%I
-14085.3 -7779.8 -689.7 7941.2 16891.5 JWt@vf~
m=`V
Coefficients: \KEmfCx'n
Estimate Std. Error t value Pr(>|t|) @
/e{-Q
(Intercept) -8.367e+05 9.471e+04 -8.835 3.07e-13 *** p,4S?cr>a
V1 8.584e+03 6.063e+02 14.159 < 2e-16 ***
NR^Z#BU
I(V1^2) -1.945e+01 1.256e+00 -15.491 < 2e-16 *** V2Z^W^
I(V1^3) 1.267e-02 8.436e-04 15.018 < 2e-16 *** 5"#xbvRS0H
--- DUf
. F
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 N,)rrBD
?r0>HvUf!l
Residual standard error: 8724 on 75 degrees of freedom (!ud"A|ab4
Multiple R-squared: 0.9952, Adjusted R-squared: 0.995 GyE5jh2
F-statistic: 5175 on 3 and 75 DF, p-value: < 2.2e-16