Calculating relative frequency
Calculating relative frequency.
- Probability = favourable outcomes ÷ all outcomes when individual outcomes are equally likely.
- A probability lies between 0 and 1; complementary probabilities sum to 1.
- Experimental relative frequency estimates probability and can vary between samples.
Example 1
A spinner lands on red 12 times in 40 spins. Find the relative frequency of red.
Example 2
A spinner lands on red 14 times in 45 spins. Find the relative frequency of red.
Your turn
A spinner lands on red 16 times in 50 spins. Find the relative frequency of red.
Check answer
A spinner lands on red 18 times in 55 spins. Find the relative frequency of red.
Check answer
A spinner lands on red 20 times in 60 spins. Find the relative frequency of red.
Check answer
A spinner lands on red 22 times in 65 spins. Find the relative frequency of red.
Check answer
A spinner lands on red 24 times in 70 spins. Find the relative frequency of red.
Check answer
A spinner lands on red 16 times in 50 spins. Find the relative frequency of red.
AnswerA spinner lands on red 18 times in 55 spins. Find the relative frequency of red.
AnswerA spinner lands on red 20 times in 60 spins. Find the relative frequency of red.
AnswerA spinner lands on red 22 times in 65 spins. Find the relative frequency of red.
AnswerA spinner lands on red 24 times in 70 spins. Find the relative frequency of red.
Answer