NURSING 3165 Review Test Submission Quiz 8 with Answers

Review Test Submission Quiz 8 • Question 1 Which criterion is popular for putting a halt to factor extraction in exploratory factor analysis? 4 out of 4 points Selected Answer: D. The eigenvalue drops to less than 1.0. Answers: A. A slow, steady decline in the percentage of explained variance is observed. B. The eigenvalue exceeds 10.0. C. The variance accounted for by the last factor falls below 20%. D. The eigenvalue drops to less than 1.0. • Question 2 Latent trait scales use which theory as their framework? 4 out of 4 points Selected Answer: A. Item response theory Answers: A. Item response theory B. Reflective theory C. Formative theory D. Classical test theory • Question 3 4 out of 4 points All scales (or the subscales within a broad, complex scale) should be: Selected Answer: A. unidimensional. Answers: A. unidimensional. B. operationally defined. C. reflective. D. latent. • Question 4 0 out of 4 points A nurse researcher wants to describe the relationship between marital status (married versus unmarried) and having a diagnosis of postpartum depression (yes versus no). Which tool would the researcher use in the analysis? Selected Answer: A. Pearson’s product–moment correlation coefficient Answers: A. Pearson’s product–moment correlation coefficient B. A scatter plot C. Spearman’s rho D. A crosstabs table • Question 5 4 out of 4 points In a content validation, experts are asked to rate items along certain dimensions. Which dimension is rated for the purpose of computing I- CVIs and S-CVIs? Selected Answer: D. The items’ relevance to the construct Answers: A. The items’ appropriateness for the target population B. The items’ clarity C. The items’ readability D. The items’ relevance to the construct • Question 6 4 out of 4 points Here are five score values: 2, 5, 9, 10, 10. Which measure of central tendency for this distribution would have a value of 9? Selected Answer: A. The median Answers: A. The median B. The mean C. The mode D. The mode, median, and mean would be equal— all would be 9 • Question 7 A researcher undertook an item analysis with data from a development sample of 200 respondents. The correlation between responses to Item 1 and Item 10 was .78. What does this suggest? 4 out of 4 points Selected Answer: A. The items may be overly redundant. Answers: A. The items may be overly redundant. B. The items are strong candidates for inclusion in the scale. C. One or both items are insufficiently congruent with the underlying construct. D. The sample size was too small. • Question 8 Which tool is not used to facilitate interpretations of scale scores? 4 out of 4 points Selected Answer: A. Weighted scores Answers: A. Weighted scores B. Percentiles C. Norms D. Standard scores • Question 9 4 out of 4 points What would a scatter plot look like for a perfect positive relationship? Selected Answer: C. A diagonal line from lower left to upper right Answers: A. A diagonal line from upper left to lower right B. A straight horizontal line near the mean of variable 2 C. A diagonal line from lower left to upper right D. A straight vertical line near the mean of variable 1 • Question 10 A researcher examined item–scale correlations for a new scale. For one item, the item–scale correlation was .27. What should the researcher do? 4 out of 4 points Selected Answer: A. Eliminate the item from further consideration. Answers: A. Eliminate the item from further consideration. B. Submit the item to a factor analysis. C. Redo the correlation to see if the corrected value is the same as the uncorrected value. D. Examine whether the item might be subject to floor or ceiling effects. • Question 11 4 out of 4 points Which risk index is not used to facilitate clinical decision making when there is information about two dichotomous variables? Selected Answer: B. Standard risk Answers: A. Odds ratio B. Standard risk C. Absolute risk reduction D. Relative risk • Question 12 4 out of 4 points Which statement is true regarding factor rotation in exploratory factor analysis? Selected Answer: D. Orthogonal rot