A quick glance on the intertubes reveals that the mathmatical calculation for BMI is so simple, a simpleton could do it. Shouldn't be too difficult for me then, as I am slightly cleverer than the average simpleton.
Metric formula (using kg and m):
BMI = Mass / (Height x Height)
( I would have used the mathematical symbol for "squared" if I could work out how!)
Imperial formula (using inches and pounds):
BMI = (Mass / (Height x Height)) x 703
Now that I know how to calculate my own BMI, I can eliminate the variation in BMI caused by the variation in the height values, as measured by the weighing machine at my Doctors' surgery.
If I take the mean of my height over several weighing sessions (from the weighing machine print-out), and assuming that the accuracy of the weighing scales is linear, I can use the mean height value to recalculate my BMI for each of the weighing sessions. Voila! More accurate BMI values.
I'll update the Chart when I've done this.
More later.
Alex.
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