Capital X Symbol
The capital Latin letter X is used to represent a random variable in statistics
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| Unicode | X | |
Usage
Random Variable | Notation
In probability a random variable is denoted using capital latin letters usually X, Y, and Z or A, and B respectively.
Probability Distribution | Notation
A probability distribution is denoted like a function. Often a capital P is used for the function name, and the capital letter X is used for the argument to the function.
Conditional Probability | Notation
Conditional probability is denoted using a vertical bar between the two variables