Which of the following statements are TRUE?
I. In an observational study subjects are randomly...
Mathematics, 05.05.2020 06:08 jsdhhddb8445
Which of the following statements are TRUE?
I. In an observational study subjects are randomly assigned to treatment groups.
II. A systematic sample is an example of an SRS because every experimental unit has
an equal chance of being chosen.
III. Blocking is for experiments and stratifying is for studies.
A. I only
B. II and III
C. I, II and III
D. I and III
E. III only
Answers: 1
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