24. Which of the following statements accurately portrays the relationship of reliability to validity? a. Inferences must be valid before the scores can be reliable. b. Scores must be reliable before inferences can be valid. c. The more valid the inference is, the higher the reliability of the score must be. d. Score reliability is not related to inference validity. 25. If two variables are highly correlated, what do you know? a. that they always go together. b. that high values on one variable lead to high values on the other variable. c. that there are no other variables responsible for the relationship. d. that changes in one variable are accompanied by predictable changes in the other.
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The correct statement is: b. Scores must be reliable before inferences can be valid. This is because reliability refers to the consistency and stability of the scores, while validity refers to the accuracy and meaningfulness of the inferences made from the scores. Show more…
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28. Which of the following statements regarding the validity is correct? Select one: a. Criterion-related validity or predictive validity can be demonstrated by using regression. b. External validity is the degree to which instruments cover aspects of the underlying construct. c. Construct validity has to be demonstrated by analyzing Cronbach's alpha coefficient. d. Content validity is the degree to which instruments are related to other constructs.
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Q13: A variable that is being predicted by another variable is called a(n) A. predictor variable B. criterion variable C. independent variable D. two of the above are correct Q14: Which of the following correlations is stronger? A. + 2.56 B. + 0.53 C. + 0.71 D. – 0.87 Q15: Computing correlations is appropriate when we have A. categorical data B. ratio data C. measurement data D. two of the above are correct Q16: Two variables, X and Y, have a significant linear correlation. Under what conditions can the direction of causality be determined just from knowing the correlation coefficient? A. when the correlation is negative B. when the correlation is positive C. neither a) nor b) are correct D. both A and B are correct Q17: If you conducted a study where you could account for 64% of the variability for one variable with another variable, which of the following correlation coefficients did you find? A. .80 B. .64 C. .4096 D. none of the above are correct
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