1. Relative Frequency

2. Relative Frequency Relative Frequency has already happened.1
Relative Frequency has already happened.
Relative Frequency always between 0 and 1.
Sum of Relative Frequencies add to 1.

3. Exercise 1 Flip a coin 40 times and write down your results:
Relative Frequency of heads?
Relative Frequency of tails?
What is the total relative frequency?
Compare your results to the probability of landing on heads or tails.

4. Exercise 1 Total Coin Tally Frequency Relative Frequency Probability
Heads
Tails
Total

5. Exercise 2 Roll a dice 20 times and record the results:
Calculate the relative frequency of each number?
What is the total relative frequency?
Compare your results to the probability of landing on each colour.

6. Exercise 2 1 2 3 4 5 6 Total Number Tally Frequency Relative Frequency
Probability 1 2 3 4 5 6
Total

7. Exercise 3 Spin the spinner 30 times and record the results:
Calculate the relative frequency of each colour?
What is the total relative frequency?
Compare your results to the probability of each colour.

8. Exercise 3
Colour
Tally
Frequency
Relative Frequency
Probability
Total

9. Expected Frequency
Expected Frequency: Probability OR X No. of Trials Relative Frequency
Example: A dice is rolled 300 times, how many times would expect to land on the number 3?
1/6 x 300 = 50

10. Exercise
Using the Relative Frequency you calculated in Exercise 1, how many times would you expect to land on heads if you flipped the coin 100 times?
Using the Relative Frequency you calculated in Exercise 2, how many times would you expect to land on the number 6 if you rolled the dice 120 times?
Using the Relative Frequency you calculated in Exercise 3, how many times would you expect to land on the Red sector if you spun the spinner 96 times?