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# MATH 1530 Test 1

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The average age of students in a statistics class is 22. Does this statement describe descriptive or inferential statistics? Descriptive
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.
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.
Identify the level of measurement for data that can be classified according to color. nominal
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
Identify the level of measurement for data that are the temperature of 22 refrigerators. interval
Classify the number of complaint letters received by the United States Postal Service in a given day as quantitative or qualitative data? quantitative
Identify the level of measurement for data that are the number of pages in your stats book. ratio
Every fifth teenager entering a concert is checked for possession of drugs. What sampling technique is used? systematic
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
Created by: kloglesby