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What is the mean for the following sample of scores?
Scores: 1, 2, 5, 4
What is the value of (ΣX)² for the follwing scores?
Scores: 3, 0, 5, 2
What is the median for the following set of scores?
Scores: 1, 2, 5, 6, 17
Which set of test scores has the smallest standard deviation?
A. 11, 17, 31, 53
B. 5, 11, 42, 22
C. 145, 143, 145, 147
D. 27, 105, 10, 80
For which of the following situations would a repeated-measures research design be appropriate?
A. Comparing verbal skills for girls vs. boys at age 3
B. Comparing pain tolerance before and after taking a new pain medication
C. Comparing self-esteem for students who participate in school athletics vs. those who do not
D. Comparing problem solving skills for science majors versus art majors at a college.
Which of the following Pearson Correlations shows the greatest strength or consistency of relationship?
A. -0.90
B. +0.74
C. +0.85
D. -0.33
For which of the following situations would a repeated-measures design have the maximum advantage over an independent-measures design?
Scores from a statistics exam are reported as deviations scores. Which of the following deviation scores indicates a higher position in the class distribution?
A. +8
B. 0
C. -8
D. cannot determine without more information
A researcher conducts an experiment to determine whether moderate doses of St. John's Wort have any effect on memory for college students. For this study, what is the independent variable?
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