Differences between narrative aggregated literature reviews and systematic reviews.
List the differences between narrative aggregated literature
reviews and systematic reviews
QUESTION 2 (5 marks)
According to the Joanna Briggs Institute, what level of evidence
would you ascribe to:
a) a randomised controlled trial
b) a cohort study
Explain why the levels of evidence are different.
QUESTION 3 (10 marks)
a) Identify the appropriate measurement scale for each of the
following:
Variable Measurement Scale
Annual birth rate
Body temperature
Education level
pH
Country of birth
Ranking of journals in a
category according to impact
factor
Presence or absence of
infection
Age
pH
Country of birth
Ranking of journals in a
category according to impact
factor
Presence or absence of
infection
Age
b) If you were collecting data on the above variables, which
might you measure on a different scale? Which other scale
could you use? Identify one advantage and one disadvantage of
measuring the variable in this way.
QUESTION 4 (8 marks)
A class of 30 students received the following marks (expressed
as percentages) for their overall assessment.
Student Mar
k
Student Mark Stude
nt
Mar
k
Jessica 78 Amandee
p
85 Moha
mme
d
77
Jianxia 60 Louisa 60 Yapin
g
73
Mark 82 David 76 Trace
y
73
Herlina 52 Rebecca 70 Abdul 85
James 35 Mavilde 88 Melan
ie
62
Emily 77 Elise 50 Rober
t
24
Ramon 64 Mishal 77 Nawal 77
Hawa 87 Caroline 62 Diana 52
Julia 50 Zara 80 Peter 40
Simon 76 Sunit 51 Wend
y
84
a) Calculate:
i) The mean
ii) The median
iii) The mode
b) What inference can you make about the distribution of
marks?
c) What would be the most appropriate measure of:
i) central tendency
ii) dispersion
d) Grades are allocated in the following way:
Fail = 0-49; Pass = 50-59; Credit = 60-69; Distinction = 70-79;
High distinction = 80-100
Construct a frequency distribution of the students’ grades. You
may present this in table or graphic form.
e) What measurement scale does this represent?