Which of the Following Is NOT a Recommended Practice for Coding

Multiple Choice

Which of the following is NOT a recommended practice for coding data and entering it into a file?

A) Assign specific column locations for particular variables.
B) When a question allows multiple responses, use the same variable for each response option.
C) Use only numeric codes, not letters of the alphabet or special characters like @.
D) Use standard codes for "no information".
E) Code a respondent identification number on each record.