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.
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The #reverb10 prompt for December 3rd was to write about a time when you felt most truly alive in 2010. There were more prompts, about what you wonder about and other examining-your-soul type of introspection. This isn’t that kind of blog. I don’t think I’m that type of person. For the record, the time I…
We interrupt this discussion of chi-square and other categorical data analysis for a broadcast from the future … My brain is full. After three days of Macworld I have come to a number of conclusions, which I will share with you in random order, thus sparing you the expense, inconvenience and sogginess of traveling to…
New semester coming up when I will be teaching data mining. Because I never do anything at the last minute, I’m registering my course and testing the SAS on-demand for Enterprise Miner now. I have learned from experience not to ignore it when the instructions say to check your configuration. You should find how to…
Last post, we happily uploaded our data, read it into SAS using a combination of SAS utilities and coding, decided all was lovely and used this code to concatenate the 4 datasets. DATA allplants ; set import1 – import4 ; IF you get an error at this point, what should you do? Let’s say you…
PROC UNIVARIATE is for numeric data. I use it a lot of times as the first step in my categorical data analyses. How weird is that? Okay, well, maybe it’s not leafy sea dragon level of strange but it does seem an odd thing to do. After all, much of the output that PROC UNIVARIATE…
Going from the phi coefficient to odds-ratios. Remember the numerator for the phi coefficient was well, the odds ratio is the same two numbers DIVIDED rather than subtracted. You might think it is four numbers, but really it is not. The first number is the product of the diagonal cells (see below). The second number…