实验数据独立性检验小记

检验A,B两组数据的相关性是实验中经常碰到的问题. 在本文中我将以具体例子来说明如何在Excel中做独立性测试, 这里我用的是卡方检验.

卡方做独立性检验举例

Example . 假设A,B两组数据如下(完整的数据可以看文末的xls附件), 教程中只以图形的方式加以说明: Continue Reading

So here I am in the middle way…

So here I am, in the middle way, having had twenty years — twenty years largely wasted, the years of l’entre deux guerres — trying to learn to use words, and every attempt is a wholly new start, and a different kind of failure, because one has only learnt to get the better of words for the thing one no longer has to say, or the way in which one is no longer disposed to say it.

T.S. Eliot, Four Quartets