Probability · Challenge 25 of 25 · about 7 min
Two Spinner Experiments
Compare two seeded experiments made with the same fair spinner.
Your challenge
Take your time. Your answer is checked only when you choose Check Answer.
Curriculum details
- Curriculum code
- VC2M4P02
- Strand
- Probability
- Focus
- Conduct repeated chance experiments and describe variation in the results.
Interactive visual
An interactive Chance results can wobble model is ready. Choose Show Visual Trick to reveal and hear one mathematical change at a time.
Visual Trick
Chance results can wobble
Equal chance does not mean every short experiment will have exactly equal totals.
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Step 1
Use the same equal Red-and-Blue spinner for both runs.
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Step 2
Reveal Run A as Red 12 and Blue 8 in a tally and graph.
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Step 3
Reveal Run B as Red 9 and Blue 11 in a tally and graph.
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Step 4
Compare the different totals from the same fair spinner.
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Step 5
Connect the variation to the conclusion that fair short runs need not be identical.
Your answer
Worked explanation
Why the answer makes sense
- Each spin gives Red and Blue an equal chance.
- Run A produced 12 Red and 8 Blue, while Run B produced 9 Red and 11 Blue.
- The outcomes have equal chances, but short experiments can produce different results, so the answer is No.
This counts as one completed curriculum item. You can replay the model or review it again anytime.