statistics
posted by Hannah .
In a statistical study, the sample is
A. the entire group of individuals about which we want information
B. the entire group of individuals from which we actually collect information
C. the set of individuals who choose to respond to survey questions
D. none of the above
This question is boggling my mind.

statistics 
Ms. Sue
Check the first two definitions
http://dictionary.reference.com/browse/sample
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