A manager of a grocery store collects data on each shopper who uses the self-checkout lanes on a Saturday morning. Which of the following is an example of a discrete quantitative variable that might be recorded in this setting?

A discrete quantitative variable is a numerical count that takes separate whole-number values. The number of items a shopper has is counted in whole numbers, so it is discrete and quantitative. Gender and coupon use are categorical variables, while transaction time is a quantitative measurement that can vary continuously.

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