John, a medical practitioner at aprivate medical facility, is discussing the pro
ID: 2951032 • Letter: J
Question
John, a medical practitioner at aprivate medical facility, is discussing the problem that Tom– a patient at the facility – says he has been havingwith the medication that the doctor has prescribed. It is a newmedication and the facility has been asked to gather informationabout the medication for the manufacturer. At a previous visit tothe doctor, Tom was complaining that the medication made hisstomach upset. A check of the medication reactions data shows 0%reports on stomach upset in extensive testing. The doctor has askedTom to fill out a log sheet of when he takes the medication andwhen, after that, that he feels his stomach get upset.
John takes the log sheet and calculatesa Correlation Coefficient for the data. The calculation shows thatthere is a positive .85 correlation coefficient between taking themedication and stomach upset. Tom sees the number and says,“See, that proves it. The medication causes stomachupset!”
What does this say about Tom’sstatement?
Explanation / Answer
A positive 0.85 correlation coefficient between taking the medication and stomach upset is an indication, that the medication causes stomach upset.
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