The memo of probability theory

The result of a randomized trial is called an event. Throwing 3 coins, for example, happens to be two positive.

Events are divided into composite (decomposed) events and simple (non-exploded) events. For example, throwing two dice points and 6 is a composite event, the number of throwing dice is 1,5 is a simple event.

A sample of a simple event occurs as a sample point. Each non-decomposed result of a randomized trial can be represented by one and only one sample point.

The whole of the sample point is called the sample space.

The sample space is a set, and the sample point is the element of the collection, and any event is a subset of the sample space.

The basis for deciding whether an event a occurs is to see if the sample points contained in a are present.

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The memo of probability theory