An observational study that asks participants to recall their first childhood memory is a(n) __________ study.
Fill in the blank(s) with correct word
Q. 2Which of the following statements about case-control studies is false?
a. Case-control studies have some clear advantages over randomized experiments.
b. A properly designed case-control study does a good job of reducing potential confounding variables.
c. Any controls that are selected will improve the quality of the results of the study.
d. None of the above.
Q. 3It is the purpose of what type of study to find out whether one or more explanatory variables are related to a certain disease (for example whether smoking causes lung cancer)?
a. Case-control study
b. Matched-pairs experiment
c. Block design
d. None of the above
Q. 4Which of the following is not a type of observational study?
a. Case-control study
b. Retrospective study
c. Prospective study
d. Introspective study
Q. 5In order to establish a connection between an explanatory and response variable in an observational study, what is needed?
a. Statistical methods that examine the connection.
b. A comparison to determine if changes in the explanatory variable are related to changes in the response variable.
c. Either a) or b)
d. You can never establish a connection between an explanatory and a response variable without doing a randomized experiment.
Q. 6Name one disadvantage and one advantage of an observational study over an experiment.
Q. 7Which type of observational study gives you better quality data, a retrospective study or a prospective study, and why?
Q. 8The case-control design has some clear advantages over randomized experiments as well as over other observational studies. Name two of those advantages.
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