用英文给random sample下定义.
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用英文给random sample下定义.
完整的 权威的准确的定义 要是英文的.
完整的 权威的准确的定义 要是英文的.
![用英文给random sample下定义.](/uploads/image/z/18597641-41-1.jpg?t=%E7%94%A8%E8%8B%B1%E6%96%87%E7%BB%99random+sample%E4%B8%8B%E5%AE%9A%E4%B9%89.)
A random sample is one chosen by a method involving an unpredictable component.Random sampling can also refer to taking a number of independent observations from the same probability distribution,without involving any real population.