one-tail hypothesis 单边测验.又称 one-tailed hypothesis 或 one-sided test.
two-sided tests 双边测验.又称 two-tailed hypothesis 或 two-sided test
双边测验是一种用在推论方面的统计测验,当检验统计量的值足够小或足够大时,给定的统计假设将被否定.单边检验与此相反,根据两个被预选中的数据,其中只要任何一个为足够小或足够大时,给定的统计假设即被否定.
请问 one-tail hypothesis 和two-tail hypothesis 是什么 能具体讲讲意思和用法啊等
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