Question: Using the multiple imputed values, develop an overall least squares model for total cost (using the log transformation) making optimal use of partial information, with

Using the multiple imputed values, develop an overall least squares model for total cost (using the log transformation) making optimal use of partial information, with variances computed so as to take imputation (except for cost) into account. The model should use the predictors in Problem 1 and should not assume linearity in any predictor but should assume additivity.

Interpret one of the resulting ratios of imputation-corrected variance to apparent variance and explain why ratios greater than one do not mean that imputation is inefficient.

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