Probability Distribution
For a discrete random variable, a table or formula showing P(X = x) for each possible value x. For a continuous random variable, a probability density function f(x) where probabilities are areas under the curve.
Real World
A quality-control engineer at a Samsung factory models the number of defective screens per batch using a binomial probability distribution, allowing the factory to predict how often large defect counts will occur.
Exam Focus
Always verify that probabilities sum to 1 when completing a probability distribution table in show-that questions.
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