Question

A recent poll asked 82 college students 7 questions about their experience at college. When asked their age only 58 responded.

A. Self interest
B. Correlation and casualty
C. Loaded questions
D. Nonresponse

Im stuck between self interest or Nonresponse

Answer 1

Nonresponse. The others might occur, but with this degree of nonresponse inferences to the entire population cannot be made.

Answer 2

D. Nonresponse

Its improbable that half the population didn't respond due to self-interest.