Exercise 2

2. What is the mode for the current therapy variable in this study? Provide a rationale for your answer.

8. What frequency and percent of cardiac patients in this study were not being treated with an antidepressant? Show your calculations and round your answer to the nearest whole percent (%).

exercise6

1. What are the frequency and percentage of the COPD patients in thesevereairflowlimitation group who are employed in theEckerbladet al. (2014)study?

3. What is the total sample size of this study? What frequency and percentage of the total sample were still employed? Show your calculations and round your answer to the nearest whole percent.

3. What is the total sample size of this study? What frequency and percentage of the total sample were still employed? Show your calculations and round your answer to the nearest whole percent.

5. What are pack years of smoking? Is there a significant difference between the moderate and severe airflow limitation groups regarding pack years of smoking? Provide a rationale for your answer.

Exercise 8

1. The number of nursing students enrolled in a particular nursing program between the years of 2013 and 2020, respectively, were 563, 593, 606, 540, 563, 610, and 577. Determine the mean, median, and mode of the number of the nursing students enrolled in this program. Show your calculations.

2. What is the mode for the variable inpatient complications in Table 2? What percentage of the study participants had this complication?

3. Identify the mean, median, and range for the ECG recording time (hours) for the patients. Is the distribution of the data normal, positively skewed, or negatively skewed? Provide a rationale for your answer.

4. As reported in Table 1, what are the three most common cardiovascular medical history events in this study, and why is it clinically important to know the frequency of these events?

5. What are the mean and median lengths of stay (LOS) for the study participants?

6. Are the mean and median for LOS similar or different? What might this indicate about the distribution of the sample? Is the distribution normal, positively skewed, or negatively skewed? Provide a rationale for your answer.