If some natural relationship exists between each pair of observations that provides a logical reason to compare the first observation of sample 1 with the first observation of sample 2, the second observation of sample 1 with the second observation of sample 2, and so on, the samples are referred to as:
A. matched pairs.
B. independent samples.
C. nonrandom samples.
D. None of these choices.
Analysis:
A. Correct. The samples are referred to as matched pairs.
B. Incorrect. The samples are referred to as matched pairs.
C. Incorrect. The samples are referred to as matched pairs.
D. Incorrect. The samples are referred to as matched pairs.
ANSWER : A
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