Answer questions in word document. Text book photos regarding chapter information is included. Due within 2 days

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Exercise 12

1. Discuss the differences between parametric and nonparametric statistical techniques.

Provide an example of parametric statistical technique and a nonparametric statistical

technique applying the algorithm in Figure 12-1.

2. What statistical technique was probably conducted for a study focused on examining

associations or relationships that had variables measured at the ordinal level and

included one group? Provide a rationale for your answer.

3. What statistical technique was probably conducted for a study focused on examining

differences that had variables measured at the ratio level and included three

independent groups (interventions, placebo, and control)? Provide a rationale.

4. What statistical technique was probably conducted for a study focused on predicting a

dependent variable using one independent variable that was measured at the

interval/ratio level in a sample of patients with heart failure? Provide a rationale.

5. What statistical technique was probably conducted for a study focused on examining

differences that had variables measured at the ordinal level and included three paired

samples or groups? Provide rationale.

6. Study hypothesis: Nurses working in healthcare organizations with magnet status have

higher job satisfaction than nurses working in organizations without magnet status. Job

satisfaction was measures with a multi-item Likert scale. What statistical technique

would researchers probably conduct to test this hypothesis? Provide a rationale.

7. Harrington (213) examined relationships among physical activities, weight, and sleep

duration (measured in minutes per night) in a sample of 8-year-old children. What

inferential statistics technique did Harrington conduct in analyzing her study data?

Provide a rationale.

8. Harrington (2013) determined differences between students failing grades and students

with passing grades for sleep in minutes (SLEEP). What statistical technique did

Harrington conduct to examine these differences? Provide rationale.

9. Smith and colleagues (2014, p.68) developed the following questions to guide their

study. “What are the relationships among the variables of perceived stress, sleep

quality, loneliness, and self-esteem among obese young adult women?” The variables

were measured with multi-item Likert scales, and the data were considered at the

interval level. What inferential statistical technique did these researchers conduct to

analyze their study data? Provide rationale.

10. Lindseth (2014, p. 187) conducted a quasi-experimental study to examine the effects of

low and high aspartame diets on depression, mood, working memory, and spatial

orientation. These variables were measured at the interval or ratio level. “The

participants served as their own control.” What statistical technique did Lindseth

conduct to analyze the data for the four dependent variables? Provide rationale.

Exercise 23

1. A researcher surveyed two groups of professionals, nirse practitioners, and physicians,

and asked them whether or not they supported expanding the role of nurse

practitioners prescribing privileges, answered as wither 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 expanding 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: “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?

4. What statistic would be appropriate for a difference research question involving the

comparison of two independent groups on a normally distributed continuous

dependent variable?

5. A Statistics professor tests her students level of knowledge at the beginning of the

semester and administers the same test at the end of the semester. She compares the

two sets of continuous scores. Her research question is: Is there a difference in statistics

knowledge form the beginning to the end of the semester? What is the appropriate

statistic to address the research question if the scores are normally distributes?

6. What is the appropriate statistic to address the research question in Question 3 if the

scores are NOT normally distributed?

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?

8. What statistic would be appropriate for a difference research question involving the

comparison of two independent groups on a non-normally distributed, skewed

continuous dependent variable?

9. A nurse educator is interested in the difference between traditional clinical instruction

in pediatrics and simulated pediatrics instruction in a BSN program. She randomizes

students to receiving 50 hours of either traditional clinical rotations in a pediatrics

department or 50 hours of simulated instruction in pediatrics. At the end of the 50

hours, the students are assessed for clinical competency in pediatrics using a

standardized instrument that yields a pass/fail result. Her research question is: Is there a

difference in between the traditional clinical group and the simulation group on rates of

passing the competency assessment? What is the appropriate statistic to address the

research question?

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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