1. Determine if this is an example of probability or statistics: The average cost of groceries has risen by 4.2% in the last year.
2. Determine if this data is qualitative or quantitative: Home value
3. Determine if this study is experimental or observational: Researchers monitor the health of smokers and non-smokers.
4. Construct a grouped frequency distribution for the data given below:
92 93 86 81 85 81 86 88 89 93
83 92 81 93 92 85 93 82 95 86
5. Determine if this is an example of a variable or a parameter: 79.6% of Americans own at least one vehicle.
6. Determine if this statistical study is descriptive or inferential: A study finds that 18% of consumers prefer brand A to brand B
7. Identify the sampling technique used to obtain this sample: A person throws a phone book into the air five times; each time, he selects the tenth number on the page to which it opens.
8. In your own line of work, give one example of a discrete and one example of a continuous random variable, and describe why each is continuous or discrete.