能不能有人给我解释一下什么是p-value

P-Vaule 简单来说就是"在Ho为真下,比样本统计量还要极端的机率"当P-Vaule < α 时则应拒绝Ho。由於我们在做检定时求弃却域都必须先求出临界值(k)不过若母体为非常态分配则必须不断代入不同的数值来试所以并不好求,因此我们只要将P-Vaule求出来与 α 做比较,就可以轻易的直接判断是否拒绝Ho了

The p-value is used when doing a hypothesis test --either a z-test (large sample) or t-test (small sample). It is the area (probability) in either the tail of a z-distribution or a t-distribution. The p-value is compared to the α-risk. If it is less than the α-risk, the null hypothesis cannot be accepted. If it is greater than the α-risk, the null hypothesis cannot be rejected.
It is usually calculated by a calculator or a computer.