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[求助] 线性和非线性拟合时误差参数应如何计算?

最近看文献时,发现文中提到误差参数的计算,主要有以下几个:
The coefficient determination;  The sum of the squares of the errors (errsq);
The hyrbrid error function(HYBRID); Marquardt's percent standard deviation(MPSD); The average reltive error(ARE); The sum of absolute errors(eabs).
Excel软件中好像没找到这几个函数,请问这些误差参数应如何计算,最好能提供详细计算方法,谢谢!
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