In quantitative research, inferential statistics are numerical values that enable a researcher to reach conclusions that extend beyond the immediate data alone. Which inferential statistic tests the relationship between two variables?
Analysis of variance (ANOVA)
T-test
P-value
Pearson's r correlations
The Correct Answer is D
Choice A reason: ANOVA is used to compare means across three or more groups to determine if there are statistically significant differences. It does not test the relationship between two variables but rather differences among group means.
Choice B reason: A t-test compares the means of two groups to determine if they are statistically different. It is useful for hypothesis testing but does not measure the strength or direction of a relationship between two continuous variables.
Choice C reason: The p-value indicates the probability that the observed results occurred by chance. It is a component of hypothesis testing but not a statistic that directly measures relationships between variables.
Choice D reason: Pearson’s r correlation coefficient measures the strength and direction of the linear relationship between two continuous variables. It ranges from -1 to +1 and is the most appropriate inferential statistic for testing relationships between two variables.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Telmisartan is an angiotensin II receptor blocker (ARB), which prevents angiotensin II from binding to its receptors. It does not inhibit the conversion of angiotensin I to II and is less likely to cause a dry cough.
Choice B reason: Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor. It blocks the conversion of angiotensin I to angiotensin II, reducing vasoconstriction and aldosterone secretion. A common side effect is a persistent dry cough due to increased bradykinin levels.
Choice C reason: Amlodipine is a calcium channel blocker that reduces blood pressure by relaxing vascular smooth muscle. It does not affect the renin-angiotensin system and does not cause dry cough.
Choice D reason: Furosemide is a loop diuretic that acts on the ascending loop of Henle to promote sodium and water excretion. It is used in heart failure and edema but does not influence angiotensin conversion or cause dry cough.
Correct Answer is C
Explanation
Choice A reason: "Legislate, execute, and judge" refers to the three branches of government and their functions, not the phases of health policy development. This framework is constitutional, not specific to health policy.
Choice B reason: "Plan, Do, Study, Act" is a quality improvement cycle used in healthcare settings to test and implement changes in clinical practice. It is not a framework for health policy development.
Choice C reason: The health policy process typically follows three core phases: formulation (developing policy proposals), implementation (putting policies into action), and evaluation (assessing the effectiveness and impact of the policy). This model is widely accepted in public health and policy literature.
Choice D reason: "Understand, design, and structure change" is a vague and non-standard framework. It does not reflect the established phases used in health policy analysis and development.
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