Re: OT - googling for barometric pressure

FurPaw wrote:

You can try the eyeball method. For each of the variables that you're interested in (heat, cold, rain, exercise on prior day, low pressure, etc.), make a little 2x2 matrix that has yes/no for the variable and yes/no for pain, and tally up the number of days where you had a mark in each cell, e.g.,

Pain
Low Pressure Yes No
Yes 8 1
No 2 7

Now, if you find a matrix where you find most of the days represented on a diagonal, like the one above, that would look like you may have a correlation, and you'd want to pursue it, gather more data.

If you get a matrix where you have nearly equal numbers in each of the cells, then you don't have any evidence of a correlation, e.g.,

Pain
Low Pressure Yes No
Yes 5 3
No 4 4


I can do that. Yes!
--Lia

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