Sam conducts a study of 1000 male participants examining how candidate attitudes, age, and education affect voting behavior. He finds a
positive association between education and likelihood of voting, from
which he concludes that overall, more educated people are more likely to
vote. Based on the above information alone, at which stage of the
research process might Sam's study be biased?
disseminating the results
O sampling strategy
O identifying the question
O study design