Elementary Statistics
the histogrgram shows the distance of hurricanes that have hit the U.S. mainland by category, with 1 the weakest level and five the strongest.
*find (a) mean
(b)variance
(c) standard deviation (d) expected value of the probablity distribution
x= 1 2 3 4 5
P(x)=.399 .264 .260 .066 .011

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is the mean right??

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