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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, b. Continuous variable, c. Discreet variable, d. Discreet variable

Step by step solution

01

Determine the type of variable for 'insufficient-funds checks'

The number of insufficient-funds checks received by a grocery store during a month is a discrete variable. This is because checks can only be counted in whole numbers as individual items, they cannot be divided.
02

Determine the type of variable for 'weight decrease of ground beef'

The amount by which a 1-pound package of ground beef decreases in weight (because of moisture loss) before purchase is a continuous variable. This is because the weight decrease could take any value within a certain range, and it isn't limited to whole numbers.
03

Determine the type of variable for 'New York Yankees players'

The number of New York Yankees during a given year who will not play for the Yankees the next year is a discrete variable. This is because players are countable and cannot be divided into parts.
04

Determine the type of variable for 'used textbook purchases'

The number of students in a class of 35 who have purchased a used textbook is a discrete variable. This is because students can only be counted in whole numbers as individual items, they cannot be divided.

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Most popular questions from this chapter

In a survey of 100 people who had recently purchased motorcycles, data on the following variables were recorded: Gender of purchaser Brand of motorcycle purchased Number of previous motorcycles owned by purchaser Telephone area code of purchaser Weight of motorcycle as equipped at purchase a. Which of these variables are categorical? b. Which of these variables are discrete numerical? c. Which type of graphical display would be an appropriate choice for summarizing the gender data, a bar chart or a dotplot? d. Which type of graphical display would be an appropriate choice for summarizing the weight data, a bar chart or a dotplot?

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