Ramon determines that in his neighborhood amount of ice cream consumed and number of violent crimes are positively correlated -- the more ice cream consumed, the more crimes are committed.
He concludes that something in ice cream leads people to commit violent crimes. What has Ramon overlooked?
a. the third variable problem as some other variable could lead to an increase in both ice cream consumption and violent crime
b. the reactive effect as the people in his neighborhood were probably aware that he was observing them, and altered their behavior toward what they thought he wanted to see
c. his observations are qualitative and therefore inappropriate
d. he collected his data only after-the-fact
Question 2
In a truly random sample from a population,
a. all participants will be matched on important characteristics.
b. all members of the population have an equal chance of being selected.
c. gender distribution should be 50 male and 50 female.
d. every member of the population has a 50:50 chance of being selected.
Chromosome number is halved
Instruct the patient to use an applicator to apply a small amount of stool in the appropriate boxes ...
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