Exam 12: Correlation Tests and Simple Linear Regression

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The difference between an interrupted time series design and an equivalent time series design is that the interrupted time series design includes a _______________ event, while a non-interrupted time series design includes a ________________ treatment.

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Which of the following would help control for bias in a pretest-posttest design?

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When participants are randomly assigned to levels of the independent variable in an experiment to control for individual differences as an extraneous variable this is called:

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Pretest-posttest designs are quasi-experiments when they do not contain a

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A study was done in Pueblo, CO to compare the pattern of heart attack rates across the year before and the year after a public smoking ban had been enacted. The researchers who conducted this study used an) __________ design.

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The best way to minimize the effects of maturation is to include a ________ group that does not receive the treatment to allow a comparison of groups that have similar experiences except for the treatment.

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Random assignment of participants is much less likely in time series designs with a researcher-implemented treatment than an independent event examined in an interrupted time series design.

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The Solomon four-group design allows a researcher to measure

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Which of the following sources of bias may be problematic in pretest-posttest designs?

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Time-series designs are pretest-posttest designs that

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Attrition results in data being deleted from a study ( or a portion of a study).

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These occur when participants are tested more than once in a study with early testing affecting later testing.

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A time series design where the "treatment" is an independent event, such as a historical event is called an):

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This occurs when participants choose not to complete a study:

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