Recently, I had the need to write the exact same programs twice, once using SAS and once using SPSS syntax. Even though these aren’t the same language, having done it once made it much easier to do it the second time. Let’s start with quintile matching. I’ve been rambling on about propensity scores lately and…
I wrote Part 1 a couple of years ago, so I guess I’m due for a part 2. In this case, I started with a data set in SAS but because it was going to be used by a group who had some SAS users and some SPSS users, they wanted to have the code…
Upfront confession – I completely copied the first part of this from a macro Paul Dickman wrote in 1999 because it did ALMOST exactly what I wanted. I tested it several times with different data and on different computers to see that it worked the way I expected. I actually found it on some random…
Although I tell my students all of the time that statistics is everywhere, even I did not really see where mixed martial arts, free rice and PROC SURVEYSELECT could possibly have anything in common. Here is what happened …. Mixed martial arts Darling daughter #3 after the Olympics decides not to go to college as…
My initial exposure to Occam’s razor came in my first undergraduate economics class. Perhaps due to my tender years, it made a great impression, and I have tried to apply it ever since. In short, Occam’s razor advises us when presented with competing, plausible choices, the…
1. Use the data sets in the sashelp directory for dummy data. 2. The RANUNI function is worth remembering Today I needed to check something. Specifically, I was using the ranuni function to generate random numbers for sampling with replacement. I wanted the data set to be sorted randomly, select the first match, then re-sort…
COMPLETELY RANDOM THOUGHTS on business sparked by twitter…. I live just south of Malibu, a city filled with the type of houses God would have built if he only he’d had enough money. Often, I’ll take the afternoon off and go hiking in the Santa Monica mountains, peeking into the backyards, tennis courts and golfing…
Photo from Nic Cubrilovic. Creative Commons license. Thanks, dude! It’s been 15-20 years since I was last a member of the American Statistical Association. I read an article in their journals occasionally but not much of it is relevant to me. I work with clients who are designing surveys, analyzing messy data and evaluating programs….
In a few (okay, a lot) of my previous posts I talked about how you could get set up with SAS On-Demand, problems you might have, programs to run. Now we get to the crux of the matter. Why? Let’s assume that you are like most professors in America and your students are like most…
Last week, I was relaxing in bed reading a book when my daughter, Julia, came storming into the room. She demanded, “Mom! Have you heard of SOPA?” I informed her that yes, in fact, I had. She said she had read about it on Google and written a letter to her Congressman. Students in her…