Variable Measurement Scale Essay Assignment Paper

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Variable Measurement Scale Essay Assignment Paper

Variable Measurement Scale

b) According to the JBI evidence hierarchy (effectiveness domain), what level of evidence is this article?
c) What is the evidence regarding the frequency of administration set changes?

Variable Measurement Scale
Body temperature
Time of day (Night, Dawn, Noon, Afternoon, Evening)
Hair Colour
Ranking of journals in a category according to impact factor
Presence or absence of infection

b) What percentage of light bulbs should last for at least 830 hours?

b) Identify 3 threats to internal validity in this study and suggest strategies by which they could be prevented or reduced [6 marks]

Grace 50 Sunil 62 Ahmed 67
Jianxia 76 Louisa 90 Tracey 72
Mark 82 David 72 Lian 62
Herlina 52 Jennifer 54 Abdul 20
James 64 Matilda 69 Melanie 65
Bianca 77 Elise 43 James 59
Mishal 35 Ramon 75 Jehan 67
Nawal 85 Caroline 62 Diana 58
Chris 78 Zara 70 Peter 68
Simon 60 Sunit 56 Rebecca 53

i) The mean
ii) The median
iii) The mode


c) What statistical test would you perform to examine the significance of this association? [1 mark]
d) You are also interested to know whether there is an association between the marks obtained for this subject, and those obtained for another unit which all of the students have taken. To compare the marks you calculate Pearson’s correlation coefficient, and obtain a result of -0.334. What can you conclude about the relationship between the two sets of marks? [1 mark]


i) central tendency
ii) dispersion




c) What design could be used to provide a higher level of evidence? Why is this second design considered superior? [2 marks]
d) Give three (3) reasons why Julia’s team might have chosen the first design over the second [3 marks]
e) For this study, identify [2 marks]:
i) the independent variable
ii) the dependent variable
f) How will Julia’s team examine the association between the independent and dependent variables? [1 mark]
g) What statistical test would be appropriate to test the hypothesis? [1 mark]
h) The test is performed and the result generated is p=0.004. Interpret the p-value. [1 mark]
i) What decision would you expect the researchers to make with respect to the null hypothesis? [1 mark]


b). Comment on the width of the confidence intervals for the various studies. What is the likeliest reason for the difference? [2 marks]


d) What conclusion will the researchers make regarding the null hypothesis? [1 mark]


b) Identify and provide the rationale for a suitable sampling strategy for this methodology. [3 marks]
c) What data collection strategy/strategies would be most appropriate for this methodology? Give reasons. [3 marks]
d) Describe, and provide a rationale for, an appropriate method of data analysis for this methodology. [3 marks]
e) Identify three (3) elements of research rigour relevant to this methodology and provide a specific example of how each could be achieved in this study. [6 marks]


b) Provide an example of each of the following ethical review categories, and give reasons why the type of study would be categorised in this way [8 marks]
i) a type of study requiring approval by the full Human Research Ethics Committee (HREC)
ii) a type of study that could be approved by the Chair of the HREC alone
iii) a type of project that could be exempted from ethical review


c) In the study in Question 9, what type of consent would you expect participants to provide? Why? [2 marks]
QUESTION 11 (13 marks)


b) Written transcripts contain only the words spoken by the participants. What other data is available during the actual interview, and is important to take into account when considering their answers to the questions? As a researcher, how would you collect this type of data? [4 marks]
c) From the data, identify two (2) themes that could contribute to answering the research question. Provide 3 examples of data (ie, quotes from the interviews) that would contribute to each theme. [8 marks]

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