Lesson 15
Error Intervals
Lesson Narrative
This lesson is optional. In this lesson, students find and analyze intervals of possible error based on maximum possible errors.
This material gives students a solid foundation for future work in statistics. It is not necessary at this stage to emphasize the idea of a margin of error which defines a range of possible values. It is enough for students to see the values falling into that range, as preparation for future learning.
Learning Goals
Teacher Facing
- Comprehend that manufacturers often define a maximum acceptable percent error for characteristics of their products.
- Determine what information is needed to solve a problem involving percent error. Ask questions to elicit that information.
- Generate values that fall within the acceptable range for a measurement, given a maximum percent error.
Student Facing
Let’s solve more problems about percent error.
Required Materials
Required Preparation
Print and cut cards from the Info Gap: Quality Control activity blackline master. One copy of the blackline master will be used for every 4 students.
Learning Targets
Student Facing
- I can find a range of possible values for a quantity if I know the maximum percent error and the correct value.
CCSS Standards
Addressing
Print Formatted Materials
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| Student Task Statements | docx | |
| Cumulative Practice Problem Set | docx | |
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| Teacher Presentation Materials | docx | |
| Blackline Masters | zip |