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Exam 8: Correlational Research and Resources

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Question 41

Multiple Choice

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Attentuation refers to

A) stating there is not a relationship between two variables when there is one
B) lowered accuracy in a prediction equation when it is applied to a new sample.
C) combining many variables in order to predict the most amount of variance.
D) effects of unreliable instruments underestimating the correlation.

E) All of the above
F) C) and D)

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Question 42

Multiple Choice

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For each, consider the information the correlation provides. -Kevin's analysis indicated that in his dataset SES was correlated r=.25 with absenteeism. This indicates that

A) as SES increases there is a corresponding increase in absenteeism..
B) SES is moderately correlated with absenteeism.
C) SES does not predict absenteeism.
D) absenteeism is strongly correlated with SES.

E) A) and D)
F) C) and D)

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Question 43

Multiple Choice

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Regarding sampling, one strategy to facilitate obtaining accurate results if there will be subgroup correlations would be to select a

Of the following research topics, which is most likely to be a correlation study?

Which of the following represents the strongest correlation?

In a single prediction question Y=a + bX) , X represents an)

Of the following, which is most likely an example of a correlational study?

For each, consider the information the correlation provides. -Qi's analysis indicated that for those students who took calculus in high school and then introductory calculus in the first year of University, grades were correlated r=.45. This indicates that high school grades and university grades are

A Phi coefficient is used for

In her prediction study of high school mathematics experiences and University calculus performance, Kirby reported that number of courses taken was correlated r=.42 while the grades in high school mathematics courses was correlated r=.25 with university grades. Given her findings, Kirby can conclude which of the following?