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Chapter 1: Problem 14

For the following numerical variables, state whether each is discrete or continuous. a. The number of insufficient-funds checks received by a grocery store during a given month b. The amount by which a 1 -pound package of ground beef decreases in weight (because of moisture loss) before purchase c. The number of New York Yankees during a given year who will not play for the Yankees the next year d. The number of students in a class of 35 who have purchased a used copy of the textbook

Short Answer

Expert verified
a. Discrete Variable \n b. Continuous Variable \n c. Discrete Variable \n d. Discrete Variable

Step by step solution

01

Analyzing Variable a

Variable a. pertains to the number of insufficient-funds checks received by a grocery store in a month. This value can only take on whole numbers (you can't receive half a check, for instance) and hence, this is a Discrete variable.
02

Analyzing Variable b

Variable b. concerns the amount of weight a package of ground beef loses due to moisture loss. This variable value can occur in a continuous range, and isn't limited to distinct, isolated points, making it a Continuous variable.
03

Analyzing Variable c

Variable c. involves the number of New York Yankees in a year who will not play for the team next year. This is another case of a value that can only take a number of distinct counts (players), so this is a Discrete variable.
04

Analyzing Variable d

Variable d. relates to the number of students in a class of 35 who have bought a used textbook. This number can only take on whole values and is therefore a Discrete variable.

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