An appliance store sells microwave ovens and has many different styles to choose from. A handout from the store contains details about brand, type (countertop or over-range), number of power settings, and color. Which of the variables is a discrete quantitative variable?

A discrete quantitative variable is a numerical count that takes separate whole-number values. The number of power settings is counted in whole numbers, so it is discrete and quantitative. Brand, type, and color are categories rather than numerical measurements.

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