A person stands on a bathroom scale. The reading is 150 lb. After the person gets off the scale, the reading is 2 lb.
a. Is it possible to estimate the uncertainty in this measurement? If so, estimate it. If not, explain why not.
b. Is it possible to estimate the bias in this measurement? If so, estimate it. If not, explain why not.
(a) No, we cannot determine the standard deviation of the process from a single measurement.
(b) Yes, the bias can be estimated to be 2 pounds, because the reading is 2 pounds when the true weight is 0.
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