Just how confident can we be with statistics calculated from a sample? Learners take this into account as they look at data from a sample of petroleum engineer salaries. They analyze the effect sample size has on a margin of error and confidence intervals. 

Concepts

inferences, making inferences, random sampling, sample size, margin of error, proportions

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Additional Tags

math

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Instructional Ideas

• Incorporate as an exploration of margin of error

Classroom Considerations

• Requires an online applet
• The activity uses a specific set of materials, including a deck of cards and large number lines

Pros

• Includes a student handout to follow through the activity
• Provides all necessary background information and data needed for the activity

Cons

• None

Common Core

7.SP.A.2 HSS-IC.B.4 MP2 MP3 MP4 MP5