An Administrator in Charge of Residential Life Services Recently Conducted

Multiple Choice

An administrator in charge of residential life services recently conducted a survey of undergraduate college students at a small university. A random sample of 300 students was selected from each class level (freshman, sophomore, junior, or senior) . Each student was asked to complete and return a short questionnaire on the quality of campus residences. Some students returned the questionnaire; some did not. This is summarized in the table below. How many different marginal distributions could be plotted from these data?

A) 0
B) 1
C) 2
D) None of the answer options is correct.