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 can be counted as 0, 1, 2, and so on, so it is discrete. Gender and coupon use are categorical, while transaction time is quantitative but can vary continuously.

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