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What is probability? | Year 5 Mathematics PDF Download
How do you show probability?
- Probability or chance refers to the likelihood of an event occurring. An event with low probability is unlikely to occur. An event with high probability is likely to occur.
- Probabilities are often expressed as fractions.
- The probability of getting 'tails' when tossing a coin is 1 in 2, or 1/2.
- Probabilities can also be represented as decimals or percentages. A probability of 1/2 is equivalent to 0.5 or 50%.
Using Probability
- A bag contains three bananas and nothing else.
- Probabilities range from 0 (impossible) to 1 (certain).
- The probability of pulling out a banana from the bag is 1 (certain) since there are only bananas.
- The probability of pulling out an apple from the bag is 0 (impossible) since there are no apples.
Question for What is probability?Try yourself: A bag contains 4 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of pulling out a red marble from the bag?View Solution
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FAQs on What is probability? - Year 5 Mathematics
| 1. What is probability? |  |
Ans. Probability is a measure of the likelihood that an event will occur. It is expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
| 2. How do you show probability? | |
Ans. Probability can be shown using fractions, decimals, or percentages. For example, a probability of 1/2 can also be written as 0.5 or 50%.
| 3. What are some common ways to calculate probability? | |
Ans. Common methods to calculate probability include the classical method, relative frequency method, and subjective method. Each method is used depending on the situation and information available.
| 4. Can probability be calculated for both simple and compound events? | |
Ans. Yes, probability can be calculated for both simple events (events with one outcome) and compound events (events with multiple outcomes). The calculation method may vary depending on the complexity of the event.
| 5. Why is understanding probability important in various fields such as statistics, finance, and science? | |
Ans. Understanding probability is crucial in fields like statistics, finance, and science as it helps in making informed decisions, predicting outcomes, and assessing risks. It provides a framework for analyzing uncertain situations and making sound judgments based on data.
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Dec 22, 2024 Last updated |
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