曲线拟合

可以用常见模型去拟合给定的二维数据，对话框如下图所示。

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选择所有模型，单击OK按钮后生成图形如下图所示。

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左下角文本框中输出下面的计算结果，包括模型和对应的R平方值。

Curve Fitting

Independent:Var1

Dependent: Var2

Linear Model: y=2648.8666666667+(-59.1212121212)*X

R2= 0.2678885068

Inversive(1) Model: y=2075.9721573172+845.7853455638/X

R2= 0.9908308551

Inversive(2) Model: y=1/(0.0004726195+(-0.000132879)/X)

R2= 0.9996407778

Logarithmn Model: y=2767.8452383015+(-294.049991122)*log(X)

R2= 0.8054746488

Exponential Model: y=exp(7.8785923982+(-0.0239606614)*X)

R2= 0.3651445344

XY Logarithmn Model: y=exp(7.92448289+(-0.1176306119)*log(X))

R2= 0.8427919023

S Model: y=exp(7.6489790768+0.3340073204*(1/X))

R2= 0.9968017421

X Root Model: y=2951.2605223817+(-279.3095746727)*sqr(X)

R2= 0.5827957056

Y Root Model: y=(51.4236913958+(-0.5945146248)*X)^2

R2= 0.3176369896

XY Root Model: y=(54.4449676324+(-2.7999950066)*sqr(X))^2

R2= 0.6149294775