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1. In research studies, which situation demonstrates self-selection bias? Select

ID: 3229822 • Letter: 1

Question

1. In research studies, which situation demonstrates self-selection bias? Select one: a. In an online survey on gun control, gun owners were twice as likely to respond as non-owners. b. For a statewide poll, a newspaper only contacted residents of urban areas. Incorrect c. In an aging study, men were more likely than women to die before study completion. d. In an experiment, most of the female participants were assigned to the control group by chance.

2. Besides random selection, which study design increases the generalizability of survey results?

Select one:

b. increasing the sample size c. offering a monetary incentive d. using an in-person interview format

Explanation / Answer

1. b. For a statewide poll, a newspaper only contacted residents of urban areas. This is bias situation as it was statewide but nespaper just contacted urban areas.