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Which of the following is not a feature of a good sample ?

  • A.Sample should be big in size.
  • B.Sample should be representative of the universe.
  • C.Sample should be reliable.
  • D.Sample should be measurable by known probability sampling design technique.

Answer: A

The statement that a good sample should be big in size is not a feature of a good sample. A sample is good if it is representative of the universe, reliable and chosen by a probability design, and size alone does not make it good. A large sample that is biased is still a poor sample.

The other three options give features that a good sample has, so they are rejected. Representativeness is the main test of a sample, and a probability design allows the error to be measured. Size helps only when the sample is drawn properly, and so a bigger sample is not by itself a feature of a good sample.

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