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### HLT 362V Week 1 Assignment Workbook Exercise 6, 8, 9, 11, 16, 27 NEW

Exercise 6

What are the frequency and percentage of the COPD patients in the severe airﬂow limitation group who are employed in the Eckerblad et al. (2014) study?

What percentage of the total sample is retired? What percentage of the total sample is on sick leave?

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### HLT 362V Week 1 Discussion Question 1 How Can Graphics and Statistics be Used to Misrepresent Data NEW

How can graphics and/or statistics be used to misrepresent data? Where have you seen this done?

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### HLT 362V Week 1 Discussion Question 2 What Are The Characteristics Of A Population NEW

What are the characteristics of a population for which it would be appropriate to use mean/median/mode? When would the characteristics of a population make them inappropriate to use?

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### HLT 362V Week 2 Assignment Workbook Exercise 10,18, 26 NEW

Exercise # 10

What demographic variables were measured at the nominal level of measurement in the Oh et al. (2014) study? Provide a rationale for your answer.

What statistics were calculated to describe body mass index (BMI) in this study? Were these appropriate? Provide a rationale for your answer.

Were the distributions of scores for BMI similar for the intervention and control groups? Provide a rationale for your answer.

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### HLT 362V Week 2 Discussion Question 1 Explain The Importance Of Random Sampling NEW

Explain the importance of random sampling. What problems/limitations could prevent a truly random sampling and how can they be prevented?

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### HLT 362V Week 2 Discussion Question 2 How Large Would Your Population NEW

How large would your population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)?

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### HLT 362V Week 3 Assignment Workbook Exercise 16, 17, 20, 31 and 32 NEW

Exercise # 16: Understanding Independent Samples t-Test

What do degrees of freedom (df ) mean? Canbulat et al. (2015) did not provide the dfs in their study. Why is it important to know the df for a t ratio? Using the df formula, calculate the df for this study.

What are the means and standard deviations (SDs) for age for the Buzzy intervention and control groups? What statistical analysis is conducted to determine the difference in means for age for the two groups? Was this an appropriate analysis technique? Provide a rationale for your answer.

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### HLT 362V Week 3 Discussion Question 1 Explain When a Z-Test Would Be Appropriate Over a T-Test NEW

Explain when a z-test would be appropriate over a t-test.

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### HLT 362V Week 3 Discussion Question 2 Researchers Routinely Choose An α-Level of 0.05 For Testing Their Hypotheses NEW

Researchers routinely choose an α-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower α -level (e.g. 0.01)? What are some situations in which you might accept a higher level (e.g. 0.1)?

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### HLT 362V Week 4 Assignment Workbook Exercise 18, 33 and 36 NEW

Mayland et al. (2014) do not provide the degrees of freedom (df) in their study. Use the degrees of freedom formulas provided at the beginning of this exercise to calculate the group df and the error df.

What is the F value and p value for spiritual need—patient? What do these results mean?

What is the post hoc result for facilities for the hospital with LCP vs. the hospital without LCP (see Table 2)? Is this result statistically signiﬁcant? In your opinion, is this an expected ﬁnding?

What are the assumptions for use of ANOVA?

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### HLT 362V Week 4 Discussion Question 1 If The Result Of An ANOVA Experiment Was “not Significant” NEW

If the result of an ANOVA experiment was “not significant”, was the experiment a failure? Provide reasoning and examples (real or hypothetical) to support your argument.

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### HLT 362V Week 4 Discussion Question 2 What Is An Interaction NEW

What is an interaction? Describe an example; what are the variables within your population (work, social, academic, etc.) for which you might expect interactions?

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### HLT 362V Week 5 Assignment Workbook Exercise 14 and 19, 23 24, 29 and 35 NEW

Exercise # 14: Understanding Simple Linear Regression

According to the study narrative and Figure 1 in the Flannigan et al. (2014) study, does the APLS UK formulae under- or overestimate the weight of children younger than 1 year of age? Provide a rationale for your answer.

Using the values a = 3.161 and b = 0.502 with the novel formula in Figure 1, what is the predicted weight in kilograms (kg) for a child at 9 months of age? Show your calculations.

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### HLT 362V Week 5 Discussion Question 1 Describe The Error in The Conclusion NEW

Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to increase.

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### HLT 362V Week 5 Discussion Question 2 Now That You Are Familiar With The Basic Concepts Of Statistics NEW

Now that you are familiar with the basic concepts of statistics, what are some examples of when you have seen or heard statistics used inappropriately?