Mathematics 0580 · IGCSE · Relative and expected frequencies

Relative and expected frequencies — practice question

The diagram illustrates a fair 8-sided spinner. The labels on the spinner are 3, 4, 4, 7, 7, 7, 8 and 9.

(a(i))[1]

Write down the probability that the spinner lands on the number 7.

(a(ii))[1]

Write down the probability that the spinner lands on a number greater than 2.

(b)[1]

Work out the expected number of times the spinner lands on the number 7.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct answer $\frac{3}{8}$ (or equivalent).” …