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Maths (Higher)
Conditional probability

Starter quiz

  • __________ probability can be determined by the number of times an event occurred during multiple trials.
    • A biased
    • An experimental  ✓
    • A fair
    • A theoretical
  • Select the fair spinners.
  • A toy brick that is dropped could land in one of four possible ways. Jun drops the toy brick multiple times. Starting with the least likely outcome, place the outcomes in order of likelihood.
    A toy brick that is dropped could land in one of four possible ways. Jun drops the toy brick multiple times. Starting with the least likely outcome, place the outcomes in order of likelihood.
    • 1
      ⇔
      Outcome D
    • 2
      ⇔
      Outcome B
    • 3
      ⇔
      Outcome C
    • 4
      ⇔
      Outcome A
  • A toy brick that is dropped could land in one of four possible ways. Sofia and Jun drop the toy brick multiple times. Whose results should be the most reliable? Why?
    A toy brick that is dropped could land in one of four possible ways. Sofia and Jun drop the toy brick multiple times. Whose results should be the most reliable? Why?
    • Sofia's results  ✓
    • Jun's results
    • Sofia has carried out more trials.  ✓
    • Jun has carried out fewer trials.
    • Jun's results look more consistent.
  • A dropped cone could land in one of two ways. The bar chart shows the results from an experiment. Which calculation shows how to find the experimental probability of the cone landing curve down?
    A dropped cone could land in one of two ways. The bar chart shows the results from an experiment. Which calculation shows how to find the experimental probability of the cone landing curve down?
    • \frac{34}{66}
    • \frac{34}{66+34}
    • \frac{66}{66+34}  ✓
    • \frac{66-34}{66}
    • \frac{34+66}{34 \times66}
  • A dropped cone could land in one of two ways. The bar chart shows the results from an experiment. In an experiment with 800 trials you should expect the cone to land curve down <span class="blank">______</span> times.
    A dropped cone could land in one of two ways. The bar chart shows the results from an experiment. In an experiment with 800 trials you should expect the cone to land curve down ______ times.
    • '528' ✓
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