probability density function

柯林斯詞典

1. N a function representing the relative distribution of frequency of a continuous random variable from which parameters such as its mean and variance can be derived and having the property that its integral from a to b is the probability that the variable lies in this interval. Its graph is the limiting case of a histogram as the amount of data increases and the class intervals decrease in size 概率密度函數(shù) (Also called density function)[statistics] →compare cumulative distribution function ,frequency distribution