NSG 509 Research & Applied Statistics Comprehensive Final Review Q & A 2026 Complete And Study material 20pages LEARNEXAMS

1. Multiple Choice: What statistical test would be most appropriate for comparing the mean blood pressure levels between two independent groups of patients? a) Chi-square test b) T-test c) ANOVA d) Regression analysis Answer: b) T-test Rationale: A T-test is used to compare the means of two independent groups when the dependent variable is continuous. 2. True/False: In a study measuring the time it takes for a wound to heal, the time is considered a discrete variable. Answer: False Rationale: Time is a continuous variable because it can take on an infinite number of values within a given range. 3. Fill-in-the-Blank: The ________ is a measure of variability that describes the average distance of every score from the mean. Answer: Standard deviation Rationale: The standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.