RMB301Xuất hiện trong 1 đề thi
Which of these is not one of the four main reasons for missing data?
Các lựa chọn
AThe respondent did not know the answer or did not have an opinion.
BThe respondent may have missed a question by mistake.
CThe data was not required from the respondent, perhaps because of a skip generated by a filter question in a survey.
DThe analyst ignored its presence on the data form.