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BE.104 Spring
Problem Set 3
Sherley
Due in class Thursday, March 10, 2005
See Table III from the Feb. 25, 2005 issue of
Mortality Morbidity Weekly Report
(Vol 54, p. 191).
http://www.cdc.gov/mmwr/mmwr_wk.html
1)
Generate a frequency histogram for all deaths (i.e., "All Ages" entries) in the listed cities.
What should
you do with the “U”’s?
2)
Describe the distribution.
3)
Suggest at least 3 distinct classes of “processes or factors” that might yield this distribution.
Justify your answers.
Will a similar distribution occur next week?
4)
Generate a new distribution based on the log(X), where X = the number of deaths for each city.
Describe the logtransformed distribution.
How would you now describe the original data set?
How
might this transformation be useful to you if you were comparing death rates among U.S. cities to those
among European cities?
5)
Reevaluate the frequency distribution for all deaths (i.e., "All Ages" entries) in the listed cities for its
"Poissonness".
6)
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This note was uploaded on 11/11/2011 for the course BIO 20.010j taught by Professor Lindagriffith during the Spring '06 term at MIT.
 Spring '06
 LindaGriffith

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