In coding a questionnaire,a "check all that apply" question is simply a special case of a "yes" or "no" question,so use a "1" (="yes")and "0" (="no")coding system.You will want to consider each concept being tested as a separate question.

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This is true as a "check all that apply" question is basically asking if the respondent agrees with multiple concepts presented, so each concept can be coded as a separate "yes" or "no" question. It can be represented using a coding system of "1" for "yes" and "0" for "no".

In Coding a Questionnaire,a "Check All That Apply" Question Is