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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: 1]

Flo has a bag of counters.
She picks a counter at random from the bag.
The probability that she picks a green counter is 0.52 .

Flo picks one counter from the bag at random, records the colour and replaces it in the bag. She does this 200 times.

Calculate the expected number of times she picks a green counter.

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