Statistics - Study Material and Solved Assignments

Statistics 1
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Statistics 2
Question 1
i. There is no blood pressure data for urban female
ii. The table doesn’t have grid lines
iii. There is no additional information in the table footer such as source of information
iv. The descriptive items in the condition column are not orderly i.e. rural male and
female should be together for easy comparison
v. Since the blood pressures are actual measurements of patients, then they cannot be
plus or minus but specific. Additionally, the presentation of BP measurement should
take the form of 130.23/84.92 not as presented
(Duquia et al., 2014).
Question 2
The median was appropriate because the data was not normally distributed and had skewed
sub-populations. The distribution of the SFAR scores is not consistent or systematic because
the scores are likely to be influenced by various factors such as the date of diagnosis etc.
This makes the median the most appropriate statistic because the outliers do not have an
enormous impact on the median (Chen and Ratra, 2011).
The independent sample t-test was inappropriate for the study for various reasons. First, an
independent sample t-test is appropriate when comparing the means and not median.
Moreover, the independent sample t-test is used with the assumption that the samples are
from a normally distributed population, which is the not the case here because it was a
skewed sub-population (Pandis, 2015).
Question 3
a) The question is appropriate for research on lifestyle because it examines diet which is
a major lifestyle factor (Farhud, 2015). However, the question could have been
framed differently as indicated below:
Do you eat fish? Yes. No.
Please indicate from a scale of 1-6 how often you consume fish
1 – Very Frequently