Exam (elaborations) NATIONAL UNIVERSITY BST 322 QUIZ 3 (BST322)

Exam (elaborations) NATIONAL UNIVERSITY BST 322 QUIZ 3 (BST322) • Question 1 1 out of 1 points Chi square test for independence compares observed frequencies with: Selected Answer: Expected frequencies Correct Answer: Expected frequencies • Question 2 The degrees of freedom for a 3X4 contingency table are: Selected Answer: 6 Correct Answer: 6 • Question 3 1 out of 1 points 1 out of 1 points The formula for Selected Answer: Expected frequencies is (Rtotal X Ctotal)/N Correct Answer: Expected frequencies • Question 4 1 out of 1 points This is the measure of strength of relationship most commonly used with a 2X2 table. Selected Answer: ph i Correct Answer: ph i • Question 5 1 out of 1 points Non-parametric tests do not require that variables be normally distributed. Selected Answer: Correct Answer: Tru e Tru e • Question 6 1 out of 1 points Non-parametric tests may be run when the assumptions for parametric tests cannot be met. Selected Answer: Correct Answer: Tru e Tru e • Question 7 Non-parametric tests are more powerful than parametric tests. 1 out of 1 points Selected Answer: Correct Answer: Fals e Fals e • Question 8 1 out of 1 points This is used when a conservative approach is desired and an expected cell frequency is less than 10 in a 2X2 table. Selected Answer: Yates' correction Correct Answer: Yates' correction • Question 9 1 out of 1 points This is used when the expected cell frequency in a 2X2 table is less than 5. Selected Answer: Fisher's exact test Correct Answer: Fisher's exact