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20 students are randomly selected to participate in a survey about new dress code rules at school. Is this biased or unbiased?
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Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective
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Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?
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35 ! insert < , > , or = to make the sentence true. 12 __ 25 > =
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20 students are randomly selected to participate in a survey about new dress code rules at school. I...
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