Researchers increasingly use big data because it
.a. .reflects virtually the entire population.
.b. .less often was collected for a specific purpose that might have biased the results.
.c. .is increasingly accessible due to electronic record keeping.
.d. .All of the above
.e. .None of the above
Question 2
To decide whether to believe in the results of a published study, it helps to know
.a. .whether the research was based on a random sample.
.b. .whether the researchers controlled statistically for possibly confounding variables.
.c. .what type of magazine or journal published it.
.d. .all of the above
.e. .none of the above
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