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anonymous
 4 years ago
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
anonymous
 4 years ago
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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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0a. OK, so the mean is the average, so start with finding the average of the five data points. what do you get?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Well, you got the first step write. Now you have to divide 1 by 5 to get the average

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yep! so now the variance. The average of the squared differences from the Mean. To calculate the variance follow these steps: Work out the Mean (0.2) Then for each number: subtract the Mean and square the result (the squared difference). Then work out the average of those squared differences.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so (.399.2)^2 + (.264.2)^2 +... and then divide it all by 5.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0While you work on that, I'm going to go eat dinner (also while the site restarts)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok thank you for helping

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I'll check back when I'm done to see if you need help

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0OK, how are you doing now?
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