The Kilogram is now weighed five times on a different scale. The measurements are as follows, in units of micrograms above 1 kg: 25.6, 26.8, 26.2, 26.8, 25.4.
a. Is it possible to estimate the uncertainty in these measurements? If so, estimate it. If not, explain why not.
b. Is it possible to estimate the bias in these measurements? If so, estimate it. If not, explain why not.
(a) Yes, the uncertainty can be estimated with the standard deviation of the five measurements, which is 0.65 µg.
(b) Yes, the bias can be estimated with the difference between the average measurement and the true value. This difference is 26.2 µg.
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