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On 10/9/2013 8:49 AM, Paul Nord wrote:
I know the answer the teacher wants, but i find it troubling...
10.53 + 0.615 = ?
Share and enjoy,
Paul
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Supposing I were troubled by the desire to best represent the last figure uncertainty, I might proceed in this way:
10.53 +-0.005
0.615 +-0.0005
==============
11.1450 +-0.0050 +-0.0005 = 11.1445 to 11.1505 or 11.1475 +- 0.0030
It is this last line that would prove worrying: why should the nominal value shift, when the last figure uncertainties are accounted for?
Brian Whatcott Altus OK
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