If a person is 280 pounds on one weight scale what would the scale say if you stood on two scales?
Would each scale be 140 pounds?
One foot per scale.
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140 if the weight is distributed evenly. If one scale is on top of the other, one will read a little more.
Theoretically, yes, each would read 140 pounds, but the person could be leaning to one side or another. (Also, like @filmfann says, two scales on top of each other would read slightly different numbers.)
Also, it might decrease the accuracy/precision of the measurement to use both scales side by side with one foot on each.
AP Statistics time!
Assume that the measurement on each scale is M = W + E, where W is the weight on the scale, and E is a normally-distributed error with a mean of U and a standard deviation of Q.
If you were to use one scale, the measurement will have a mean of (W + U) and a standard deviation of Q. If you were to use two scales and add the measurements together, the sum of the two scales will have a mean of (W + 2U) and a standard deviation of Q*sqrt(2).
Without all the qualifications, and getting to the point, 140 pounds.
Chiropractors use this as a measurement of pelvic misalignment.
It might depend where you carry your wallet.
totally discounting any fanny packs
If the scale could talk it would say“Whoa there, time to exercise”.
But otherwise 140 LBs.
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