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Track Meet: Model the Results Board
Build nonuniform probability models from track results-board records, make predictions, and evaluate what an unobserved outcome means.
Grade 7MathInteractive · Printable
Aligned to7.SP.C.7.b
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What’s included
- Single worksheet
- Auto-graded online
- 1 Common Core standard
- Printable answer key
- 13 questions
- Classroom-ready
Details
- Format
- Interactive · Printable
- Grade
- Grade 7
- Subject
- Math
- Question types
- Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer
About this worksheet
What students practice
- Students build probability models by dividing observed outcome frequencies by the total number of trials.
- Students use observed probability models to predict results under comparable conditions.
- Students explain why an outcome with an observed frequency of zero may still be possible.
How to use
Have students work through the board records independently, then compare models and discuss the final explanation. Allow fractions or decimals for probabilities.
Curriculum
Common Core standard covered
Build a probability model, which may not be uniform, from frequencies observed in a chance process.
Preview
OwlSheets.com
Track Meet: Model the Results Board
Use observed frequencies to model how track results reach the board.
From Timing System to Board
A delay is the time from an official result being released to its appearance on the results board. Use the observed frequencies to estimate probabilities for comparable updates.
| Delay (seconds) | Number of updates |
|---|---|
| 2 | 9 |
| 4 | 15 |
| 6 | 5 |
| 8 | 1 |
- A. 1/4, 1/4, 1/4, 1/4
- B. 2/20, 4/20, 6/20, 8/20
- C. 9/30, 15/30, 5/30, 1/30
- D. 9/30, 5/30, 15/30, 1/30
Estimate the probability that a comparable update is available by that check.
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