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Use the following data set to answer question #1-3: Data Set: 55.0, 55.5, 56.0, 56.5, 57.0, 58.0, 58.5 396.5 (1 point) 1) What is the arithmetic mean of a set of data given above? S6,64 X 2) What is the standard deviation (SD) and the % relative standard deviation (%RSD) for a set of data given above? See the statistical review document for additional information. (2 point) di=(x-x) d2 Show work. 55.0 55.5 56.0 56.5 57.0 58.0 58.5 d? S %RSD ISS, 0 - 56,6412 3) Qcritical value is used to decide whether any suspected data should be rejected. What is the Qcritical value for five measurements at 95% confidence level (see Table A1)? (1 point)