A sample made up of volunteers may be biased because
A) the control group and the experimental group can never be equated
B) it is not economical
C) they may not be representative of the total population
D) none of the above
Correct Answer:
Verified
Q7: Which of the following is representative of
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Q9: It is generally inappropriate to generalize the
Q10: A study in which the researcher interviews
Q11: Internal validity refers to whether the manipulation
Q13: In research, the population refers to
A) the
Q14: One major disadvantage of a non-probability sample
Q15: Whether the results of the study can
Q16: Random assignment of subjects to the treatment
Q17: Pre-experimental designs produce the greatest threat to
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