Someone had a question about factor analysis with Mplus and even though it is not a piece of software I work with normally, we aim to please at The Julia Group, so I downloaded the demo version and away I went. It truly was, as my granddaughter says, easy-peasy lemon squeezie. You might not think…
I’ve forgotten more about statistical software than you’ll ever know! I don’t know why people ever say this in a bragging tone because I consider that to be my problem. I’ve forgotten it. Today, I needed to do a confirmatory factor analysis with someone using AMOS. They wanted it in AMOS so that is what…
I have to choose between either SAS or SPSS for a new course in multivariate statistics. You can take it up with the university if you like, but these are my only two options, in part because the course is starting soon. I need to decide in a few days which way to go. Here…
Am I missing something here? All of the macros I have seen for the parallel analysis criterion for factor analysis look pretty complicated, but, unless I am missing something, it is a simple deal. The presumption is this: There isn’t a number like a t-value or F-value to use to test if an eigenvalue is…
About a week ago, I went through pointing and clicking your way to a factor analysis. At the time, I suggested rotating the factors. Now we’re going to interpret the rotated factor pattern. Let me recap, briefly. Agresti and Finlay (p.532) put it way better than me when they said: Factor analysis is a multivariate…
When I first went to graduate school in the 1970s (yes, for my MBA, in 1978) , if one were to comment casually, “And then I factor-analyzed the correlation matrix to solve that problem.” Everyone would say, “Ooooh.” Back in those days before statistical calculators (forget the Internet), when computers only came in big (really…
I might as well give you my opinion of these two kinds of sin as long as, in a way, against each other we are pitting them, And that is, don’t bother your head about the sins of commission because however sinful, they must at least be fun or else you wouldn’t be committing them….
As someone who has taught for over 30 years, and online for most of the last 7, I can tell you that online courses can actually be better.
I’ll be speaking about being a statistical consultant at SAS Global Forum in D.C. in March/ April. While I will be talking a little bit about factor analysis, repeated measures ANOVA and logistic regression, that is the end of my talk. The first things a statistical consultant should know don’t have much to do with…
Never fear, I’m not going to post all 30 things in this post. This is a series. A LONG series. Get excited. I was invited to speak at SAS Global Forum next year and it occurred to me after thinking about it for 14.2 seconds that there are plenty of people at SAS and elsewhere…