RMSE 和MRE,这两个是什么含义,以及利用excel能计算吗?求步骤?

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RMSE=rooted mean squared error

MRE=min(max) relative entropy

=CORREL(A2:A4,B2:B4)^2

=SQRT(SUMPRODUCT((A2:A4-B2:B4)^2)/COUNTA(A2:A4))

=SUMPRODUCT(ABS((A2:A4-B2:B4)/A2:A4))/COUNTA(A2:A4)*100