Standard deviation, significantfigures and +/- uncertainty: Using the following set of weights ingrams to determine the avergae

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Question:

Standard deviation, significantfigures and +/- uncertainty: Using the following set of weights ingrams to determine the avergae mass,standard deviation and the mass +/-uncertainty. Please show all your work and report youranswer to the correct number of significant figures.

24.9298

24.9292

24.9227

24.9456

24.9081