It may not be the secret to great joy but it is certainly the secret to avoiding unhappiness and it is simply this: The absence of self-ruminative thoughts. I’d like to claim the idea was originally mine but the truth is I first heard this phrase over a decade ago in a talk by Albert Bandura…
So, after three posts of recoding, creating scales, checking reliability and distributional assumptions we have arrived at MANOVA. If you skipped those three posts, feel shame at trying to take shortcuts, go back and read them. Before we dive into coding, let’s take a look at some basic background on MANOVA. The difference between ANOVA…
Where is the Multivariate Analysis of Variance ? You promised there would be MANOVA ! Now we’re in the third post! First there was recoding of variables. Then, there was creating scales. Now, we’re looking at reliability. Patience is a virtue. Before we get to doing a MANOVA we want to be sure that our…
Last time, we saw how to recode variables to score answers correct or incorrect, on a rating scale and weighted by importance. Today, we’re going to look at creating some scales from those variables because for reasons I’m sure I have written about at some point in the past, single items are usually not very…
I’m teaching a course on multivariate statistics and for some of the students it’s been a minute since their last inferential statistics course. So, I have been doing a few videos here and there to refresh, for example, what is a repeated measures ANOVA and why you might want to do it. Sometimes I…
Since I had done a few youtube videos on using SAS Studio, I thought I would add them to my blog. This one uses the characterize data task to take a quick look at the data, but I suppose you could have guessed that from the title. Support my day job AND get smarter….
It’s been almost two weeks of reviewing textbooks, revising my syllabus and I have to go back to it in a couple of hours to edit my last few powerpoints before class starts. Yes, when I was a brand-new baby professor I was sometimes rushing to write a lecture before class, but now that I…
Hopefully, you have read my Beginner’s Guide to Propensity Score matching or through some other means become aware of what the hell propensity score matching is. Okay, fine, how do you get those propensity scores? Think about this carefully for a moment, if you are using quintiles, you are matching people by which group they…
It ought to be easier than this and perhaps I could have found an easier way if I had more patience than the average ant or very young infant. However, I don’t. Here was the problem. I wanted control charts for two different variables, satisfaction with care, surveyed at discharge, and satisfaction with care 3…
Perhaps you have watched the Socrata videos on how to do data visualization with government data sets and it is still not working for you. Here is a step by step example of answering a simple question. Is the prevalence of alcohol use among youth higher in rural states than urban ones? You can…