algebra 1

what is the difference between a biased sample and a biased question

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  1. A biased sample is not a true sample of the population at large. For instance, a biased sample may include mostly women or mostly people under age 25.

    A biased question reflects the questioner's viewpoint. This site gives examples of biased questions.

    http://www.calvin.edu/~rpruim/courses/libarts-stats/I00/overheads/biased.shtml

  2. a biased coin with P(H)=1/4 and P(T)=3/4 is thrown twice, find the probability of getting two heads

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