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How to compute a standard deviation and control chart when you don’t have raw data

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…

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Excel for regression analysis: What a surprise!

I wouldn’t normally consider Excel for analysis, but there are four reasons I’ll be using it sometimes for the next class I’m teaching. First of all, we start out with some pretty basic statistics, I’m not even sure I’d call them statistics, and Excel is good for that kind of stuff. Second, Excel now has…

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you can make anything into an opportunity

you can make anything into an opportunity. For example today I had this very unpleasant operation on my phone actually that was my thumb not my phone. as you may have guessed comma I am now writing using a piece of voice recognition software. It’s a Google Chrome extension. this makes me happy for two…

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Mom! That Evaluator Keeps Looking at Me!

If I were to give one piece of advice to a would-be program evaluator, it would be to get to know your data so intimately it’s almost immoral. Generally, program evaluation is an activity undertaken by someone with a degree of expertise in research methods and statistics (hopefully!) using data gathered and entered by people’s…

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Filter Data with SAS Enterprise Guide: Even More Useful than You Think

Occasionally, a brave student will ask me, When will I ever use this? The “this” can be anything from a mixed model analysis to nested arrays. (I have answers for both of those, by the way.) I NEVER get that question when discussing topics like filtering data, whether for records or variables, because it is…