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Chapter 1 Notes by Steven Grindle
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Data is classified as Quantitative or qualitative. Quantitative data can be legitimately expressed as numbers because they are quantities. Qualitative data are labels or names. Height and weight are examples of quantitative data while gender and color are examples of qualitative data.
Item
Link to
answers		 Quantitative or qualitative?
Eye color
Favorite song
Gas mileage
Zip Codes
Temperature
Interest rate
Quantitative data can be further subdivided into continuous or discrete data.
Discrete data are most often represented by whole numbers (0, 1, 2, 3, ..., n) rather than fractions or decimals because discrete data has gaps between numbers. e.g. You can't have 1.7 favorite songs or 6.4 siblings.
Continuous data have no gaps between numbers. e.g. You can weigh 137.8 pounds. Your pen could be 13.5, 13.6 or 13.55 centimeters long.
Item
Link to answers		 Continuous or Discrete?
Number of blue-eyed people or number of songs
Gas mileage
Temperature
Interest rate
Gas prices
Money in the form of bills and coins