Question

question 1
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which of the following describes a biased sample?
a random selection of participants for an experiment
an error that occurs whenever a study is performed
a sample that is not representative of a population
a sample that accurately represents a population

Explanation:

A biased sample skews results as it doesn't reflect population. Random selection is unbiased, errors are different from bias, and representative samples are unbiased.

Answer:

C. A sample that is not representative of a population