Programming the statistical procedures from SAS

need the low-biased back-transformation formula for Box Cox transformation Y_hat=1/ (Y*Y)

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need the low-biased back-transformation formula for Box Cox transformation Y_hat=1/ (Y*Y)

Hi friends -- By using Proc Transreg, I identified the transformation equation: Y_hat=1/ (Y*Y).  But what is its back-transformation formula?  For Logarithmic transformation Ln(Y)=B0+B1X+Variance, I know that the back-transformation formula is Y_hat=e^(Y_Expected+ Variance_Expected^2 /2).  Will appreciate anyone who gives suggestion.  Thank you.

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