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Makerspace Lending: Audit the Sample

Evaluate sampling plans for library makerspace loans, identify selection problems, and judge which population claims the evidence supports.

Grade 7MathInteractive · Printable

Aligned to7.SP.A.1

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 7
Subject: Math
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students distinguish samples of loan transactions from samples of borrowers or kits.
Students evaluate whether selection procedures give the intended population a chance to be represented.
Students explain why random samples support estimates rather than certain claims about a population.

How to use

Use after introducing populations and random samples. Have students identify what is being selected before evaluating each plan, then discuss the final reasoning task.

Curriculum

Common Core standard covered

7.SP.A.1

Understand that a sample can tell about a population, and that random samples tend to represent the population well.

Preview

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Name Date

Makerspace Lending: Audit the Sample

Check whether a sample supports a claim about tools, kits, or loans.

Choose the Right Records

Read each investigation carefully. A loan transaction means one completed checkout, even if the same person borrows again.

The library wants to estimate the fraction of last month's makerspace loan transactions that were returned late. Which sample matches this question most directly?

A. A random sample of kits owned by the library.
B. A random sample of next month's kit reservations.
C. A random sample of last month's completed checkouts.
D. A random sample of people with library cards.

Staff are building a complete list of last month's completed makerspace checkouts. Select every record that belongs on this list.

A completed checkout entered in the computer system.A reservation canceled before the kit was checked out.A completed checkout recorded on paper during a computer outage.A completed checkout whose return date is next month.A request for a kit that the library does not own.

Staff combine the records below before drawing a sample of completed checkouts. Each checkout appears in exactly one row.