Biostatistics: Exercise Pattern and Attitude Towards Statistics

Biostatistics
Student Name:
Instructor Name:
Course Number:
7 May 2019

[Question 1] Familiarity with the data [7]
(1.1) How many students have been enrolled into the course? How many students responded to
the first wave of the questionnaire collected in the first F2F session? How many students
responded to the second wave of data collection? [3]
Answer
From the data we can see that 40 students had been enrolled into the course. Out of the 40
students, 28 students responded to the first wave of the questionnaire collected in the first
F2F session.Table 1: Count on LikeStat1
Row Labels
Count of
LikeStat1
1 1
2 5
3 12
4 6
5 4
NA 12
Grand Total 40
Out of the 40 students, 29 students responded to the second wave of data collection.Table 2: Count on LikeStat2
Row Labels Count of LikeStat2
1 1
2 3
3 17
4 7
5 1
NA 11
Grand Total 40
(1.2) Create a subset dataset, which contains only those students who had provided answers to
both waves of the survey (1st and 2nd F2F Session). Name this new dataset
“COMPLETE”. How many students’ records are there in this new dataset? How many
variables are there in this new COMPLETE dataset?
Answer
There are 22 student records in this new dataset.

The number of variables remain to be the same. That is, there are still 10 variables in this
new COMPLETE dataset. The variables are listed below;Table 3: New variable list
1 ID
2 Gender1
3 LikeStat1
4 ConfStat1
5 Exercise1
6 UseStatJob1
7 LikeStat2
8 ConfStat2
9 Exercise2
10 UseStatJob2
[Question 2] Presenting the data [22]
(2.1) For the list of variables collected from the first F2F: “Gender1" "LikeStat1" “ConfStat1”
"Exercise1" "UseStatJob1” [10]
(2.1.1) Identify each of these variables’ data types (e.g. Qualitative/Quantitative; Discrete
/Categorical /Continuous; Binary/Ordinal/Nominal...etc.).
Answer
Description of the variables.
Table 4: Variable description
Variable label Variable Type Variable class Measuremen
t
Gender1 Qualitative Categorical Nominal
LikeStat1 Quantitative Discrete Ordinal
ConfStat1 Quantitative Discrete Ordinal
Exercise1 Quantitative Continuous Ratio
UseStatJob1 Qualitative Categorical Binary
(2.1.2) State the most suitable summary statistics to explore each of these variables.
Answer
The following table presents the variables and the most suitable summary
statistics to explore each of the variables.

Table 5: Suitable summary statistics table
Variable label Suitable Summary
Statistics
Gender1 Frequencies/percentages
LikeStat1 Bar chart
ConfStat1 Bar chart
Exercise1 Histogram
UseStatJob1 Frequencies/percentages
(2.1.3) Identify the most appropriate potential plots/figures to explore each of these
variables.
Answer
The following table presents the variables and the most appropriate potential
plots/figures to explore each of the variables.
Table 6: Suitable plot table
Variable label Suitable Plot
Gender1 Pie chart
LikeStat1 Mean/median
ConfStat1 Mean/median
Exercise1 Mean/median
UseStatJob1 Pie chart
(2.2) Design a table with relevant summary/descriptive statistics, stratified by gender, to
describe the current cohort of PG dentistry students’ exercise pattern and their attitude
towards statistics at the beginning of the course. This table should contain the variables:
“Gender1", "LikeStat1", "Exercise1", "UseStatJob1”, “ConfStat1”. Write a paragraph (no
more than 250 words) to describe all these variables and any findings from this table. [12]
AnswerTable 7: Summary statistics
Frequency
(n)
Percent (%)
Gender
Female 10 45.5
Male 12 54.5
Total 22 100.0
I like statistics