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OpenStudy (anonymous):
Calculate the standard deviation of the 4 numbers: Trial 1: 1.05 ± 0.05 m. Trial 2: 2.0 m. Trial 3: 1.5 m. Trial 4: 1.05 ± 0.05 m. It says to use a calculator but my calculator doesn't allow ± uncertainty values. How can I do this?
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