review for test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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The average age of students in a statistics class is 22. Does this statement describe descriptive or inferential statistics? | Descriptive
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A survey of 1353 American households found that 18% of the households own a computer. Identify the population and sample. | population - collection of American households; sample - collection of 1353 American households surveyed.
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The average salary of all General Motors workers is 33,000. Does this value describe a population parameter or a sample statistic? Explain. | Population parameter because the 33,000 is based on all the workers at GM.
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Identify the level of measurement for data that can be classified according to color. | nominal
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Identify the level of measurement for data that are the final grades (A, B, C, D, and F) for students in a stats class. | ordinal
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Identify the level of measurement for data that are the temperature of 22 refrigerators. | interval
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Classify the number of complaint letters received by the United States Postal Service in a given day as quantitative or qualitative data? | quantitative
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Identify the level of measurement for data that are the number of pages in your stats book. | ratio
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Every fifth teenager entering a concert is checked for possession of drugs. What sampling technique is used? | systematic
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What method of data collection would you use to collect data for a study of the salaries of college professors at a particular college? | take a census
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