In the last chapter, we looked at three outliers arising from a plot of Average Wind Speed by Month in the Hopkins Forest. Each was associated with an unusually strong storm, but which was the most remarkable for its month?
Here are the summary statistics for each of those three months:

The outliers had values of 6.73 mph, 3.93 mph, and 2.53 mph, respectively.
a) What are their z-scores?
b) Which was the most extraordinary wind event?

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February June August Mean 2.324 0.857 0.63 SD 1.577 0.795 0.597