伍sir啊,统计是俺家不记事吃饭的家伙,他可不能忘。。。 VchI0KL?
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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: srCpgs]h
$Vp*,oRL
Call: h0O t>e"
lm(formula = V3 ~ V1 + I(V1^2) + I(V1^3), data = a) xMs!FMn
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Residuals: E#!tXO&,
Min 1Q Median 3Q Max _@5|r|P>
-14085.3 -7779.8 -689.7 7941.2 16891.5
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Coefficients: 0Fw4}f.o
Estimate Std. Error t value Pr(>|t|) D>fg
(Intercept) -8.367e+05 9.471e+04 -8.835 3.07e-13 *** YT`,f*t
V1 8.584e+03 6.063e+02 14.159 < 2e-16 *** $-MVsa9>I
I(V1^2) -1.945e+01 1.256e+00 -15.491 < 2e-16 *** C==yl"w
I(V1^3) 1.267e-02 8.436e-04 15.018 < 2e-16 *** .C*mDi)wZ
--- .mbqsb]&Y
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 uo8[,'
-^aJ}[uaI
Residual standard error: 8724 on 75 degrees of freedom qipV'T,S
Multiple R-squared: 0.9952, Adjusted R-squared: 0.995 m!K`?P]:N
F-statistic: 5175 on 3 and 75 DF, p-value: < 2.2e-16