what is the data type for multiple imputation multiple imputation data definition how to imputation two level data multiple imputation definition what is the structure of data for multiple imputation? how to imputation two level data what is na in r data is multiple imputation data a two level data can i imputation multiple data in r what is the statistical structure of a variable what is the structure of the data for a strata what are the variables of one data set how many variables in the total of multiple imputation what is the sum of multiple imputation can multiple imputation and two level data be used how to find the data structure in multiple imputation multiple imputation definition how many subgroups does one variable have that is missing how many subgroups are there in a six variable what is the difference between multiple imputation and two level data