# Statistics for nursing research workbook exercise 23

1. A researcher surveyed two groups of professionals, nurse practioners and physicians, and asked them whether or not they supported expanding the role of nurse practioners’ (NPs) prescribing privileges, answered as either “yes” or “no”. Her research question is: Is there a difference between NPs and physicians on proportions of support for expanded prescription privileges? What is the appropriate statistic to address the research question?

2. What statistic would be appropriate for an associational research question involving the correlation between two non-normally distributed, skewed continuous variables?

3. A researcher is interested in the extent to which years of practice among NPs predicts level of support for expanded prescription privileges, measured on a 10-point Likert scale. She finds that both variables, years of practice and level of support, are normally distributed. Her research question is: Does years of practice among NPs predict level of support for expanded prescription privileges? What is the appropriate statistic to address the research question?

7. What is the appropriate statistic to identify the association between two dichotomous variables, where the researcher is interested in identifying the odds of an outcome occurring?

10. What statistic would be appropriate for an associational research question involving the extent to which a set of variables predict a continuous, normally distributed dependent variable?

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