更新1:
點解係用z-distribution而唔係t-distribition?題目話只有sample standard derivation喎~
更新2:
有時我答題目果時唔知幾時用t 幾時用z,.,...上網check過又唔清唔楚@@ 我見有時d題目,就算係sample size>30...多數都會用z架~~~
點解係用z-distribution而唔係t-distribition?題目話只有sample standard derivation喎~
有時我答題目果時唔知幾時用t 幾時用z,.,...上網check過又唔清唔楚@@ 我見有時d題目,就算係sample size>30...多數都會用z架~~~
收錄日期: 2021-04-20 15:33:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150503000051KK00053