Cumulative Distribution Function, a statistical function that describes the probability that a random variable takes a value less than or equal to a specific value.
Acronym formed from Cumulative Distribution Function, terminology developed in probability theory during the early 20th century. The concept builds on earlier work in statistics and the mathematical formalization of probability.
The CDF is like a mathematical staircase that shows you how probability accumulates - it always starts at 0 and ends at 1, creating a perfect mathematical description of 'how likely is everything up to this point?' It's one of the most elegant ways mathematics captures the essence of uncertainty and prediction.
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