Selection bias is a systematic tendency to favor including individuals with particular ...

Selection bias is a systematic tendency to favor including individuals with particular characteristics, while excluding individuals with other characteristics.
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Q. 2

Nonresponse error occurs when someone was not selected to participate in the survey.
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Q. 3

Nonresponse error occurs when responses are not obtained from some members of the sample.
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Q. 4

A simple random sample is chosen in such a fashion that every possible subset of the same size has an equal chance of being selected.
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Q. 5

Cluster samples typically cost less but they also increase sampling error.
  Indicate whether the statement is true or false