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liu-juan

金虫 (小有名气)

[求助] 用maple, SAS, SPSS, 以及mathmatica拟合,请赐教一下,非常感谢!

x   312.07       318.84      325.11     330.36       335.30        339.88    345.97     349.11
y  0.0001632   0.00024   0.000323  0.0004345   0.0005504  0.0006852  0.0009044  0.00101
拟合函数为y=x^C*exp(A+B/T),其中A,B,C为要拟合的参数,分别用maple, SAS, SPSS, 以及mathmatica拟合,哪位大侠会其中一种或多种,请赐教一下,非常感谢!
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dbb627

荣誉版主 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
liu-juan: 金币+10, ★★★很有帮助, 谢谢你的回复 只有mathmatica 所以就给10金币啦 再次感谢 2012-03-15 21:53:27
cenwanglai: 金币+2, ~~ 2012-03-18 09:25:41
结果
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
7楼2012-03-15 20:26:19
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dingd

铁杆木虫 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
T是什么?参数还是变量或常数?
2楼2012-03-15 15:25:06
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liu-juan

金虫 (小有名气)

引用回帖:
2楼: Originally posted by dingd at 2012-03-15 15:25:06:
T是什么?参数还是变量或常数?

晕 T就是x 我写错了 不好意思不好意思
3楼2012-03-15 16:01:03
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dingd

铁杆木虫 (职业作家)

★ ★ ★ ★ ★
cenwanglai: 金币+5, 谢谢提供帮助~~ 2012-03-15 19:11:54
用1stOpt更简单方便:
CODE:
Function y=x^C*exp(A+B/x);
Data;
x=312.07,318.84,325.11,330.36,335.30,339.88,345.97,349.11;
y=0.0001632,0.00024,0.000323,0.0004345,0.0005504,0.0006852,0.0009044,0.00101;

均方差(RMSE): 6.34652525797275E-6
残差平方和(SSE): 3.22227062800689E-10
相关系数(R): 0.99975821041654
相关系数之平方(R^2): 0.999516479295283
决定系数(DC): 0.999515495557389
卡方系数(Chi-Square): 3.29576591156807E-7
F统计(F-Statistic): 5159.91140664503

参数        最佳估算
----------        -------------
c        -23.7275529230449
a        170.112400492991
b        -13290.0030751582


4楼2012-03-15 16:18:40
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