onsider the following sample data: 73, 67, 68, 77, 83, 65, 70, 75 (M = 72.4, SS =255.88) a. Calculate the variance. Round to 2 decimal points.  b. Calculate the standard deviation, rounding to 2 decimal points. c. If 10 points were added to each score in the sample dataset, what would happen to the standard deviation?

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