BST 322 final exam

Question 1 1 out of 1 points This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. Selected Answer: Fisher's exact test Answers: Fisher's exact test Cramer's V Yates' correction Regression  Question 2 1 out of 1 points When examining the relationship between a nominal variable and an interval or ratio variable, you would create a table using the nominal variables, calculate the mode and median of the interval or ratio variable, then make a decision regarding the relationship using the mode and median. Selected Answer: Fals e Answers: True Fals e  Question 3 1 out of 1 points A nurse researcher wanted to evaluate blood pressure in a set of patients/research subjects at 1, 3, and 6 months. What test would be most appropriate? Selected Answer: RM-ANOVA Answers: Independent t-test ANVOVA RM-ANOVA ANCOVA  Question 4 1 out of 1 points Not all variables retained in a regression model are required to be significant. Selected Answer: Tru e Answers: Tru e False  Question 5 1 out of 1 points The standard deviation is: Selected Answer: The square root of the variance. Answers: The difference between the 3rd and 1st quartile. The squared deviations from the mean. The difference between the highest and lowest scores. The square root of the variance.  Question 6 1 out of 1 points An assumption used by statisticians which states that population parameters are normally distributed: Selected Answer: Central Limit Theorem Answers: Central Limit Theorem Null Hypothesis Statistical significance Standard deviation  Question 7 1 out of 1 points A variable with equal distances between score units which also has a true meaningful zero is: Selected Answer: Ratio Answers: Ordina l Cardin al Ratio Nomin al  Question 8 1 out of 1 points Parametric tests can be used with any type of data. Selected Answer: Fals e Answers: True Fals e  Question 9 1 out of 1 points Data which uses number values, has an equal distance between values, and has a possible absolute zero is: Selected Answer: Ratio Answers: Interv al Nomin al Ordina l Ratio  Question 10 0 out of 1 points When examining the relationship between two interval or ration level variables, you can use a scatterplot to allow you to visualize the relationship between the two. Selected Answer: Fals e Answers: True False  Question 11 1 out of 1 points In a negative relationship, as the score of one variable decreases, the score on the second variable decreases. Selected Answer: Fals e Answers: True Fals e  Question 12 1 out of 1 points Regression uses the least squares method to fit a model. Selected Answer: Tru e Answers: Tru e False  Question 13 1 out of 1 points The arithmetic average of the data is called the: Selected Answer: Mean Answers: Mean Median Mode Variabili ty  Question 14 1 out of 1 points Causation is synonymous with association. Selected Answer: Fals e Answers: True Fals e  Question 15 1 out of 1 points If a researcher accepts a null hypothesis when that hypothesis is actually true, she has committed: Selected Answer: no error Answers: a type I error a type II error no error a causation