報上所寫的事
What exactly is a degree of freedom with a t-test?『早報!早報!十五塊錢一份!』 一位男士買了一份報紙,然後對賣報生說: 『喂!這上面明明寫著十塊錢一份呀!』 『哦!你認為報上所寫的事,都是真的嗎﹖』 顧客打電話到餡餅店叫外賣 店員問:餡餅要切成四塊還是六塊 顧客說:四塊好了我想我吃不下六There is a formula for the t distribution which has a parameter r in it. r is called the degrees of freedom. See mathworld website for awful looking formula. As r -> 00 the t distribution approaches the normal z distribution. Testing a sample mean with a ...
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