Question

Harriet has a spinner with sections that are each a different colour.

She spun it a total of 1000 times. The table below shows how
many times the spinner had landed on yellow after different
numbers of spins.
Work out the best estimate for the probability of landing on yellow.
Give your answer as a decimal to 2 s.f.
Number of
spins
10
20
50
100
500
1000
Number of times the
spinner landed on yellow
4
9
24
47
231
576

Answer 1

For example, after 1000 spins, the spinner landed on yellow 576 times, so the probability would be:

576/1000 = 0.576

To 2 decimal places, this would be 0.58.

Therefore, the best estimate for the probability of landing on yellow is 0.58.

Explanation: