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Weekend Bike Repair: Plan with Sample Evidence

Compare random samples of bike-repair times and customer distances using centers, spreads, box plots, and histograms.

Grade 7MathInteractive · Printable

Aligned to7.SP.B.4

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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, Matching, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students compare repair-time populations using sample medians, means, IQRs, and MADs.
Students judge how differences in sample centers compare with sample variation.
Students make cautious business recommendations from random-sample evidence.

How to use

Use after teaching measures of center and spread. Have students calculate on scratch paper and distinguish evidence about typical customers from guarantees about individuals.

Curriculum

Common Core standard covered

7.SP.B.4

Compare two populations informally using the centers and spreads of random samples from each.

Preview

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Name Date

Weekend Bike Repair: Plan with Sample Evidence

Compare typical values, variation, and what samples can tell a business.

Plan Appointment Lengths

Nia and Omar run a weekend bike-repair business. They randomly select 40 completed tube replacements and 40 completed brake adjustments from their records. Times are in minutes. Use these box plots for Questions 1–5.