Epidemiological studies are all lutant concentrations. In all such studies there is the hazard that some important variable has been overlooked, and that it is the true cause of the observed health effects. Careful investigators work very hard to avoid this error. It is widely reported that the monthly rate of death by drowning is well correlated with the monthly consumption of watermelons. Would it be safe to conclude that one of these caused the other? Or is there another variable relations of observed health effects with measured air to consider?

Epidemiological studies are all lutant concentrations. In all such studies there is the hazard that some important variable has been overlooked, and that it is the true cause of the observed health effects. Careful investigators work very hard to avoid this error. It is widely reported that the monthly rate of death by drowning is well correlated with the monthly consumption of watermelons. Would it be safe to conclude that one of these caused the other? Or is there another variable relations of observed health effects with measured air to consider?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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