A government agency produced a study in which they randomly chose 100 students just beginning college to determine what percentage of students who begin college graduate with a degree. After four years they identified that 23 had dropped out of college, 45 had graduated, and 20 were still pursuing their degree. What is wrong with this poll?
A. This is a self-interest study.
B. The relationship between two variables implies one causes the other.
C. a nonresponse occurred.
D. Some of the sample data are missing.
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D some of the sample data are missing
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Some of the sample data are missing.
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