what is df in r if the model is imputation, how to find a missing imputation variable how to measure quality of imputation does r use numeric imputation why a variable needs a numeric value imputation in math definition r how to measure quality of a calc when i am imputations how to do a normalized normalized model what is the purpose of a multiple imputation method in r? how to test if imputation is accurate what r package use multiple imputation imputation of a dataset how to measure imputation how to measure quality of an imputation what are the methods that are used to imputation how to measure reg r how to measure quality of imputation r measures how many imputations are made imputation of a numeric data point definition which data type uses numeric class as class variable?