Data Session 9, Part C: Investigating Variation in Estimates

Annenberg Learner

Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up

Mailing List signup

Annenberg Learner

About Us
Video
Series
Professional
Development
Course &
Video Licensing
Lesson
Plans
- View All
- Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Foreign Language
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Literature & Language Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Mathematics
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Science
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Social Studies & History
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
Interactives
- View All
  - Student
  - Teacher/Adult
- Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Foreign Language
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Literature & Language Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Mathematics
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Science
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Social Studies & History
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
News
& Blog
- Learner Log Blog
- New Releases
- Monthly Updates
  - Signup
- @Social
  - Facebook
  - Twitter
  - Pinterest
  - YouTube
  - Google+

Session 9, Part C:
Investigating Variation in Estimates

In This Part: Using a Stem and Leaf Plot | Judging the Quality of Estimates | Intervals
Describing Intervals | Probabilities

These six intervals provide a description of how widely the estimates vary from sample to sample, and how close the estimates are to the actual value of 500: Note 6

The interval from 350 to 650 is the largest interval in the table above; its interval range is 300. This tells us two things:

•	All (100/100) of the estimates are between 350 and 650, a range of 300.
•	These estimates fall within 150 (the interval radius) of 500.

The interval 475 to 525 is the smallest interval in the table. This tells us two things:

•	Fewer than half (37/100) of the estimates are between 475 and 525, a range of 50.
•	These estimates fall within 25 (the interval radius) of 500.

Problem C5

a.
Explain why it is useful for the proportion of estimates in an interval to be high.

b.
Explain why it is useful for the interval range to be small.

c.
What happens to the proportion of estimates in the interval as the interval range decreases?

Next > Part C (Continued): Probabilities

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

Session 9: Index | Notes | Solutions | Video

Home | Catalog | About Us | Search | Contact Us | Site Map

Tweet

© Annenberg Foundation 2013. All rights reserved. Privacy Policy