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Probability. How likely something is to happen.. Many events can't be predicted with total certainty. The best we can say is how likely they are to happen, using the idea of probability.. Tossing a Coin. When a coin is tossed, there are two possible outcomes:

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Simple probability: yellow marble Our mission is to provide a free, world-class education to anyone, anywhere. Khan Academy is a 501(c)(3) nonprofit organization.

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Principles of Probability. The mathematics field of probability has its own rules, definitions, and laws, which you can use to find the probability of outcomes, events, or combinations of outcomes and events. To determine probability, you need to add or subtract, multiply or divide the probabilities of the original outcomes and events.

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While calculating a 0 probability is not likely, it’s not impossible either. For example, if you were to calculate the probability of the Easter holiday falling on a Monday in the year 2020, the probability would be 0 because Easter is always on a Sunday.

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A conditional probability would look at these two events in relationship with one another, such as the probability that it is both raining and you will need to go outside.

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Definition of conditional probability plus hundreds of how-to articles from calculating means to hypothesis testing. Free forum for homework help. Definition of conditional probability plus hundreds of how-to articles from calculating means to hypothesis testing. Free forum for homework help. ... Events in life rarely have simple probability ...

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Definition: Example: An experiment is a situation involving chance or probability that leads to results called outcomes. In the problem above, the experiment is spinning the spinner. An outcome is the result of a single trial of an experiment. The possible outcomes are landing on yellow, blue, green or red.

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Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. ... Aptitude Made Easy - Probability - Basics ...

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Empirical probability, also called experimental probability, is the probability your experiment will give you a certain result. For example, you could toss a coin 100 times to see how many heads you get, or you could perform a taste test to see if 100 people preferred cola A or cola B.

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Probability: Independent Events. Life is full of random events! You need to get a "feel" for them to be a smart and successful person. The toss of a coin, throwing dice and lottery draws are all examples of random events.