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CAIE IGCSE Mathematics Core C8.2.2 Calculate Expected Frequencies Questions

Practise Core CAIE IGCSE Mathematics by multiplying a probability or sample proportion by the relevant population, interpreting the expected count and reporting a sensible frequency.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Core

Exam points

  • Multiply a probability estimate by the population or number of trials to calculate an expected frequency.
  • Use experimental relative frequency or a sample proportion to estimate an expected count in a larger group.
  • Interpret the expected value in context and report a sensible whole-number frequency.

CAIE IGCSE Mathematics Core C8.2.2 Calculate Expected Frequencies Questions question 1

[Maximum number: 2]

Heidi records the colour of each of 500 cars crossing a bridge. The pie chart shows some of this information.

Figure for Question CAIE IGCSE Mathematics Core C8.2.2 Calculate Expected Frequencies Questions question 1 — CAIE IGCSE Mathematics Core

Another 320 cars cross the bridge.

How many of these 320 cars are expected to be white?

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