Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Search
Follow The Annenberg Learner on LinkedIn Follow The Annenberg Learner on Facebook Follow Annenberg Learner on Twitter
MENU
Learning Math Home
Data Session 3, Part D: Ordering Hats
 
Session 3 Part A Part B Part C Part D Homework
 
Glossary
Data Site Map
Session 3 Materials:
Notes
Solutions
Video

Session 3, Part D:
Ordering Hats

In This Part: Understanding the Question | Data Analysis Using a Stem and Leaf Plot
Using a Histogram to Analyze the Hat-Size Data | Summary

Let's plan an order for 1,000 Standard Fit hats.

Ask a Question
How large are people's heads? Are some head sizes more common than others? For an order of 1,000 unisex Standard Fit hats, how many of each size should you order?

Collect data
We used a metric tape measure to measure the head circumferences of 55 people to the nearest millimeter:

55 Head Measurements

615

542

550

580

590

540

566

608

555

556

580

580

562

564

578

580

600

565

555

568

590

548

577

579

555

569

603

560

550

587

556

584

590

603

554

560

569

532

570

600

590

557

607

560

559

570

534

520

560

554

610

600

600

570

560

Problem D3

Solution  

Analyze the Data:
Create a stem and leaf plot for these data, using stems that correspond to Standard Fit hat sizes. Keep in mind that these are three-digit numbers and that, for these data, the stems will be based on the left two digits of the values.


 

Problem D4

Solution  

Interpret the results
Based on the stem and leaf plot, what are some things you can say about the way head sizes are distributed? Give two descriptive statements to answer the question "How large are people's heads?"


 

Problem D5

Solution  

Based on the stem and leaf plot, do some head sizes appear to be more common than others? Which head sizes are most common? Least common?


 

Problem D6

Solution  

What would happen if you ordered an equal number of each size of Standard Fit hats?


Next > Part D (Continued): Using a Histogram to Analyze the Hat-Size Data

Learning Math Home | Data Home | Register | Glossary | Map | ©

Session 3: Index | Notes | Solutions | Video

© Annenberg Foundation 2014. All rights reserved. Legal Policy