click below
click below
Normal Size Small Size show me how
MATH 1530 Test 1
review for test
Question | Answer |
---|---|
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 |