I planed to extend nonWinferiority testing to one of my statistical notes, Equivalence Testing and TOST (Two One-Sided Test) since noninferiority test is simply half part of the equivalence test. Today I’m glad to find an even better explanation from SAS Usage Note 48616: Design and analysis of noninferiority studies You will love it if […]
Tag: Proc TTEST
Best of SAS: A Personal Nomination 2012
There SAS applications/procedures/features were not necessarily available since 2012. This year I paid special attention to them when began to use SAS 9.3. The following notes are totally my personal endorsement purely based my own experience as a user: XML File Reading: SAS XML Mapper SAS XML Mapper itself is not an elegant tool from […]
Frequentist or Baysian
A latest updated post on Freakonomics, Beware the Weasel Word “Statistical” in Statistical Significance!, seemed to attempt to challenge frequentist statistics by Bayesian. I have no research on Bayesian and won’t jump to the debates. I’d rather to use this case to apply the Dragon’s Teeth and Fleas logic of hypothesis testing (at least I […]
Statistical Notes (4): Dragon’s Teeth and Fleas: Hypothesis Testing in Plain English
Statisticians aren’t the problem for data science. The real problem is too many posers — Cathy O’Neil you actually do need to understand how to invert a matrix at some point in your life if you want to be a data scientist. — Cathy O’Neil I was asked in several different occasions to explain hypothesis […]