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6. If two data sets have the same central tendency (i.e., mean and median), does that imply that they
have similar standard deviations? Explain.
7. If the data in a set consists of measurements in inches, what are the units of the variance? What are
the units of the standard deviation?
8. When conducting a scientific experiment, how do we determine the difference between an error in
measurement or recording that is truly an outlier that should be removed and an true data point that
greatly impacts the variance of the set? What if the largest measurement was actually not 12, but 20?
What would this experimental data point mean in your analysis if it were an error or actually true?
7.2 Variation