(Answered) The following density measurements were made on a bar of

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The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. The accepted value for iron's density is 7.85 g/mL.

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The error of the average of this set of measurements?
The relative error of the average expressed as a percent?

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