PROBABILITY G9 SLIDES- Introduction lesson presentation

Introduction to Grade 9 Probability topic

1. PROBABILITY GRADE 9

2. LESSON OBJECTIVES by the end of the lesson:

3. How many sides does a coin have? What are those sides?

4. What are the chances of landing on a head when tossing a coin? What are the chances of landing on a tail when tossing a coin?

5. What are the chances of landing on both the head and the tail when tossing this coin?

6. PROBABILITY Probability is a mathematical concept that measures the likelihood or chance of a specific event occurring. It's expressed as a number between 0 and 1. It can also be expressed as a fraction, decimal, or percentage .

7. DO YOU KNOW THIS PERSON?

8. If there is a low chance of an event happening, the probabilities will lie between 0 and 0,5 . If there is an even or 50-50 chance of an event happening, the probability will be 0,5 . If there is a high chance of an event happening, the probabilities will lie between 0,5 and 1 . If there is no chance of an event happening, the probability will be 0. If the event certainly happens , the probability will be 1. THE PROBABILITY SCALE

9. CALCULATING PROBABILITY PROBABILITY is calculated using the formula below:

10. Sample space The set of all possible outcomes in an experiment. Earlier, we said the coin had two sides, namely the head and tail. That is what we refer to as the sample space. S = {Head, Tail} (this is how we write a set)

11. FAVOURABLE OUTCOMES A favourable outcome is an outcome of a random experiment or event that satisfies a specific condition or criterion of interest. It is one of the desired results that you are tracking or trying to calculate the probability for.

12. Activity: cards Determine the probability of drawing, at random:

13. SUMMARY SAMPLE SPACE IS THE SET OF ALL POSSIBLE OUTCOMES IN AN EXPERIMENT. A favourable outcome is an outcome of a random experiment or event that satisfies a specific condition or criterion of interest. Probability is a mathematical concept that measures the likelihood or chance of a specific event occurring. It's expressed as a number between 0 and 1.