What’s our sign?
Rick Wicklin and I are engaged in an arms race of birthday-related blog posts. To recap: Rick analyzed national data about births in the USA and what time of year they are most likely to occur. I...
View ArticleExample 9.35: Discrete randomization and formatted output
A colleague asked for help with randomly choosing a kid within a family. This is for a trial in which families are recruited at well-child visits, but in each family only one of the children having a...
View ArticleStatistical Notes (3): Confidence Intervals for Binomial Proportion Using SAS
A guy notices a bunch of targets scattered over a barn wall, and in the center of each, in the "bulls-eye," is a bullet hole. "Wow," he says to the farmer, "that’s pretty good shooting. How’d you do...
View ArticleFrequentist 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...
View ArticleStatistical Notes (5): Confidence Intervals for Difference Between...
A guy notices a bunch of targets scattered over a barn wall, and in the center of each, in the "bulls-eye," is a bullet hole. "Wow," he says to the farmer, "that’s pretty good shooting. How’d you do...
View ArticleExample 10.5: Convert a character-valued categorical variable to numeric
In some settings it may be necessary to recode a categorical variable with character values into a variable with numeric values. For example, the matching macro we discussed in example 7.35 will only...
View ArticleBest 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...
View ArticleNoninferiority Testing with SAS
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....
View Article3 freaky ways PROC FREQ can work in your favor
This post was kindly contributed by SAS Learning Post - go there to comment and to read the full post. A ghoulish Halloween Boo to all my readers! Hope my costume freaks you out, but even if it...
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How to filter variables by percentage of missing values or duplicate values...
This post was kindly contributed by SAS Users - go there to comment and to read the full post. One day, I received a question from the SAS community on how to exclude variables with missing values up...
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