Which of the following is a true statement about experimental design?
A) The placebo effect is a concern for all experiments.
B) Blocking eliminates the effects of all lurking variables.
C) Control is a key component in experimental design. Thus, a control group that receives a placebo is a requirement for experimentation.
D) Replication is a key component in experimental design. Thus an experiment needs to be conducted on repeated samples before generalizing results.
E) Randomization is a key component in experimental design. Randomization is used to reduce bias.
Answer: randomization is a key component in experimental design. randomization is used to reduce bias
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