| 释义 |
parameter (in statistics) A parameter for a population is some quantity that relates to the population, such as its mean or median. A parameter for a population may be estimated from a sample by using an appropriate statistic as an estimator. For a distribution, a constant that appears in the probability mass function or probability density function of the distribution is called a parameter. In this sense, the normal distribution has two parameters and the Poisson distribution has one parameter, for example.
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