NR 716 Week 7 Quiz Statistics

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Student Name

Chamberlain University

NR-716: Analytic Methods

Prof. Name

Date

Quiz Purpose

The purpose of this quiz is to evaluate students’ understanding and application of parametric and nonparametric statistical techniques. Through this assessment, learners are expected to demonstrate their capability to analyze, interpret, and apply these statistical methods in both academic research and professional decision-making contexts. Furthermore, this exercise reinforces the integration of statistical reasoning into evidence-based practice, fostering a deeper understanding of data-driven conclusions.

Instructions

Availability

The quiz will be available starting Day 1 of Week 7 and will remain open for the entire week.

Attempts

Each student is allowed two attempts. The highest score will be recorded in the gradebook. If the first attempt meets expectations, retaking the quiz is optional.

Questions

All quiz items are derived from course readings, lecture notes, and interactive learning activities.

Time Allocation

While there is no official time limit, students are advised to dedicate 30–45 minutes of uninterrupted focus for completing the quiz.

Browser Requirement

The Respondus Lockdown Browser is not required for this quiz.

Resources

Students may utilize course resources, including textbooks, notes, and study guides, during the attempt.

Course Outcomes

This quiz supports the achievement of the following course outcome:

Outcome:
Critically appraise and evaluate statistical techniques in order to assess research evidence and apply findings to professional practice.

Additionally, the quiz aligns with program outcomes 3, 5, 7, and 9, which emphasize critical thinking, evidence-based practice, and the integration of research into clinical decision-making.

Due Date

All quiz attempts must be submitted by Sunday at 11:59 p.m. MT of Week 7.

Quiz Questions and Answers

The table below presents each question, available options, and the correct answer with explanation (where applicable).

Question	Options	Correct Answer / Explanation
Q1. When testing chemotherapy effectiveness, which represents a Type I error?	a) Reporting chemotherapy effective when it is not b) Reporting chemotherapy not effective when it is c) Reporting results inconclusive d) No way to determine	a) Reporting chemotherapy effective when it is not. This is a Type I error (false positive).
Q2. What is an assumption of the Mann Whitney U test?	a) Sample size ≥ 200 b) Scatter “flowerpot” curve c) Independence of observations d) Data are paired	c) Independence of observations.
Q3. With ratio data, true IV, and 2 groups, which test is most appropriate?	a) John’s Relational Test b) Bonjovi’s Test c) Regression Analysis d) Spearman’s Rank Correlation	c) Regression Analysis.
Q4. A histogram measuring income vs. education is plotted. What is the likely distribution?	a) Normal b) Bimodal c) Left Skewed d) Right Skewed	Right Skewed, if the tail extends to the right.
Q5. Which measure is least useful for understanding variability in data?	a) Standard deviation b) Variance c) Mean d) Range	c) Mean.
Q6. What are the four recognized levels of measurement?	a) Nominal, Parametric, Linear, Dichotomous b) Parametric, Continuous, Skewed, Interval c) Nominal, Ordinal, Interval, Ratio d) Levels 1–4	c) Nominal, Ordinal, Interval, Ratio.
Q7. Which are examples of descriptive statistics?	a) Mean & Mode b) Pearson’s r & Spearman’s r c) t-test & Bonferroni’s test d) Normal & Bimodal distributions	a) Mean & Mode.
Q8. The mean is most influenced by:	a) Order of data b) Total repeated values c) Individual scores d) Standard deviation	c) Individual scores.
Q9. Type II error occurs when…	a) Reject null & reject alternative b) Accept alternative & reject null c) Accept null & reject alternative d) None correct	c) Accept null & reject alternative. (False negative)
Q10. What is the mean of 6, 4, 1, 9, 3, 8, 3, 5, 10?	a) 5.4 b) 3 c) 6 d) 5	a) 5.4.
Q11. Assumptions for Pearson’s r include all EXCEPT:	a) Data parametric b) Normal distribution c) Categorical data d) Linear relationship	c) Categorical data.
Q12. Which of the following is continuous?	a) Genders b) Class size c) Hair color d) Specialty	b) Class size.
Q13. Type I error occurs when a researcher…	a) Rejects null & accepts alternative b) Rejects alternative & accepts null c) Accepts null & accepts alternative d) None	a) Rejects null & accepts alternative. (False positive)
Q14. Assumption of Spearman’s Rank Correlation:	a) Data parametric b) Normally distributed c) Data at least ordinal d) Categorical/nominal	c) Data at least ordinal.
Q15. Variance informs us about:	a) Distance of each data point from mean b) Frequency of values c) Average deviation squared d) Deviation from hypothesis	c) Average deviation squared.
Q16. In chemotherapy testing, which type of error is considered more dangerous?	a) Type I b) Type II	b) Type II. It may lead to ignoring a treatment that is actually effective.
Q17. Key assumption for Chi-square test?	a) Blinded collection b) Expected values ≥ 5 c) Samples paired d) Sample ≥ 200	b) Expected values ≥ 5.
Q18. Frequency distribution provides information about:	a) Subgroups into quartiles b) How often each value occurs c) General population d) Significance level	b) How often each value occurs.
Q19. Assumptions for t-test include all EXCEPT:	a) Parametric data b) Normal distribution c) Categorical (nominal) data d) Equality of variances	c) Categorical (nominal) data.
Q20. Which test is used for categorical pre–post data?	a) Chi-square b) Bonjovi’s Test c) Milli’s Test d) Pearson’s r	a) Chi-square.
Q21. Definition of a normal distribution curve?	a) Bell-shaped curve, symmetrical around mean	Correct: Data are symmetrically distributed in a bell-shaped curve around the mean.
Q22. Data that are distinct, unconnected, nominal/ordinal (e.g., race, marital status):	a) Monodicot data b) Discrete data c) Measured data d) Random sample data	b) Discrete data.
Q23. In chemotherapy testing, what is the consequence of a Type II error?	a) Report effective when not b) Report not effective when it is c) Report inconclusive d) No answer	b) Report not effective when it actually is.
Q24. When comparing four groups with nominal/ordinal data to examine differences in means, which test is most appropriate?	a) Regression b) Pearson’s r c) Kruskal-Wallis d) Spearman’s r	c) Kruskal-Wallis.
Q25. Histogram of income vs. education distribution?	a) Normal b) Bimodal c) Left Skewed d) Right Skewed	Bimodal, if two peaks appear.

References

Creswell, J. W., & Creswell, J. D. (2018). Research design: Qualitative, quantitative, and mixed methods approaches (5th ed.). Sage Publications.

Grove, S. K., Gray, J., & Burns, N. (2019). Understanding nursing research: Building an evidence-based practice (7th ed.). Elsevier.

Polit, D. F., & Beck, C. T. (2021). Nursing research: Generating and assessing evidence for nursing practice (11th ed.). Wolters Kluwer.

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