Tag Archives: Median

Pondering via the web

This morning got up early and sat at my desk while having a coffee. I got multiple windows up on my multi 24″ monitor setup and my adequate quadcore Windows personal computer. Perused the latest news and tech stories.

Then I opened my Feedly account and looked at my Science feeds. “The Reference Frame” has a new post. I like that blog. Most of the time I don’t know what he is writing about, and the anti-climate change diatribes sound like Fox News, but in all it has some tidbits for us science aficionados. Like today, he is discussing something about intelligence. Which leads me to recall that there was another attempt to present an “equation” of intelligence by another sciencecy type, Bart Kosko. Bart was discussing creativity. Creativity is the measure of the number of results or responses to the same number of data or stimulus, or something like that.

So, I searched for the Kosko reference. Couldn’t find it. I did find this quote, which is very good: ““Whenever the invisible hand isn’t operating the iron fist is”” — Bart Kosko. Then I sidetracked to the Subsethood theorem. Then to “The Sample Mean“.

Which of course, I now had to browse the web to make sure I really knew what the sample mean is. This led to views of various sites and of course Wikipedia (which led to all sorts of side tracks into other things).

Anyway, back to the sample mean. While reading up on it, I thought well (not listing the paths that led here) if the standard deviation is so weak when the data has huge outliers, why not do the same computations using the Median measure? I ran Excel and did a few. Not bad. If data is pretty ‘regular’ it is close to the STD. Hmmm. Maybe this should be part of statistics? Well, more browsing and of course it turns out that it is. It is called the Median Absolute Deviation (MAD). MAD can even be added to Excel.

Well, that was an hour. Not wasted. Certainly better than watching TV. Now back to the task at hand, working on something that may make a good Kickstarter project.

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