<![CDATA[基本术语]]>Population
A population is any large collection of objects or individuals, such as Americans, students, or trees about which information is desired.
Parameter
A parameter is any summary number, like an average or percentage, that describes the entire population.
The population mean (the greek letter "mu") and the population proportion p are two different population parameters.
Sample
A sample is a representative group drawn from the population.
Statistic
A statistic is any summary number, like an average or percentage, that describes the sample.

https://online.stat.psu.edu/statprogram/reviews/statistical-concepts/terminology

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