Notice postied on EdPoo's page I noticed that you edited out my (correct) version of average, and replaced it with the previously (incorrect) one, labelling my version as obscure. This confirms for me what I have bee thinking for some time, that the entire CP project is doomed, unless you and other Sysops get a bit more open-minded, and read the entries that others have written and are prepared to learn, rather than be dogmatic. I defined Average, exactly as I would define it to my students; the point is, that in common parlance, people use average as the middle or most likely of set of data, without actually understanding that the idea is problematic. As it turns out the most sensible 'middle' is actually median, or the most common is mode; however, this is not waht people normally refer to as average; notmally they calcualte it using the arithmetic mean. However that is neither the most common, nor the middle. Can you explain what arithmetic mean ACTUALLY is - what is it attempting to emasure in everyday language??? It's extremely difficult to explain.
What the arithmetic mean is, goes something like: "If all the data were the same, but you had the sma total as you had before, then the data value you get would be called the average".
The geometric mean you get when you ask the same question for rates of interest, and the harmonic mean you get when you ask the same question about speeds.
If anyone who was exditing the average pages knew anything about descriptive statistics, this page should say somehting a lot different.
You should not reverting such pages, because you clearly don't have sufficient mathematical understanding to appreciate the nuances. --SeanTheSheep 03:05, 14 May 2007 (EDT)