📚 Topic Summary
Chance and likelihood deal with how probable an event is to occur. Chance refers to the possibility of something happening, while likelihood is a measure of how probable that event is. We often express likelihood as a fraction, decimal, or percentage. Understanding these concepts helps us make informed decisions and predictions about the world around us. For example, if you flip a fair coin, the chance of getting heads is 50%, meaning it is equally likely to get heads or tails.
In probability, we use terms like 'certain,' 'likely,' 'unlikely,' and 'impossible' to describe different levels of likelihood. A certain event has a 100% chance of occurring, while an impossible event has a 0% chance. Likelihood helps us quantify uncertainty and make predictions based on available information.
🧮 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Probability |
A. An event that will definitely happen. |
| 2. Certain |
B. The chance that something will happen. |
| 3. Impossible |
C. An event that has no chance of happening. |
| 4. Likely |
D. Having a high probability of occurring. |
| 5. Unlikely |
E. Having a low probability of occurring. |
✍️ Part B: Fill in the Blanks
Complete the paragraph using the words: likely, chance, probability, impossible, and certain.
The measure of how probable an event is to occur is called __________. If an event has a high __________, it is said to be __________. On the other hand, an event with a 0% __________ of occurring is considered __________. An event that is __________ will definitely happen.
🤔 Part C: Critical Thinking
Describe a real-life situation where understanding chance and likelihood can help you make a better decision. Explain your reasoning.
