Reporting the Correct Number of Significant Figures

Total your points for the different parts. There are 10 possible points. Subtract one point if you did not report the correct number of significant figures in part (c). 

In order to report the correct number of significant figures in a measurement, an estimate of the uncertainties is obviously required. Sometimes this will be nothing more than an informed guess of the likely effect of random errors. In more sophisticated measurements, further experiments may need to be carried out in order to assess the importance of both random and systematic errors. 

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