Assessing fairness from results
Assessing fairness from results.
- Probability = favourable outcomes ÷ all outcomes when individual outcomes are equally likely.
- A probability lies between 0 and 1; complementary probabilities sum to 1.
- Experimental relative frequency estimates probability and can vary between samples.
Example 1
A spinner with two equal sectors is spun 100 times: red 75, blue 25. Comment on whether the results support fairness.
Example 2
A spinner with two equal sectors is spun 110 times: red 81, blue 29. Comment on whether the results support fairness.
Your turn
A spinner with two equal sectors is spun 120 times: red 87, blue 33. Comment on whether the results support fairness.
Check answer
A spinner with two equal sectors is spun 130 times: red 93, blue 37. Comment on whether the results support fairness.
Check answer
A spinner with two equal sectors is spun 140 times: red 99, blue 41. Comment on whether the results support fairness.
Check answer
A spinner with two equal sectors is spun 150 times: red 105, blue 45. Comment on whether the results support fairness.
Check answer
A spinner with two equal sectors is spun 160 times: red 111, blue 49. Comment on whether the results support fairness.
Check answer
A spinner with two equal sectors is spun 120 times: red 87, blue 33. Comment on whether the results support fairness.
AnswerA spinner with two equal sectors is spun 130 times: red 93, blue 37. Comment on whether the results support fairness.
AnswerA spinner with two equal sectors is spun 140 times: red 99, blue 41. Comment on whether the results support fairness.
AnswerA spinner with two equal sectors is spun 150 times: red 105, blue 45. Comment on whether the results support fairness.
AnswerA spinner with two equal sectors is spun 160 times: red 111, blue 49. Comment on whether the results support fairness.
Answer