假设检验
假设检验:旧称显著性检验,是统计推断的重要内容。它是指先对总体的参数或分布作出某种假设,再用适当的统计方法根据样本对总体提供的信息,推断此假设应当拒绝或不拒绝。
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上一篇:Suburbia (郊区) As the cities became more crowded and as the means of transportation improved, middle-class residents (居民)of the city began to move out. In the suburbs they could find ____41___ (safe), more attracti
Suburbia (郊区) As the cities became more crowded and as the means of transportation improved, middle-class residents (居民)of the city began to move out. In the suburbs they could find ____41___ (safe), more attracti
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