Epidemiology Biostatistics Study Material

Epidemiology biostatistics
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Course Number:
18 May 2019

Question 1:
Not a valid proportion
Answer
1.2 is not a valid proportion
Question 2:
Data type
Answer
Nominal is the data type for male
Question 3:
Data type
Answer
This is a continuous data
Question 4:
A patient is recorded as having 3rd degree burns. What type of data is this?
Answer
This is ordinal type of data
Question 5:
The true statement regarding the sex differences between particular matter exposures.

Answer
The true choice is c which says that the men in this sample have a larger range of particulate
matter exposure values than the women.
Question 6:
The true statement regarding the sex differences between depression scores.
Answer
The true choice is b which says the distribution of depression scores in men and women are
skewed in opposing directions.
Question 7:
Normal resting heart rate.
Answer
The correct choice is b which says that the team’s resting heart rates are at the lower end of
normal resting heart rate for adults.
Question 8:
Which one of the statements about the number 0.18 is correct?
Answer
The correct answer is a. Which says it is a sample proportion.
Question 9:
The estimated difference in proportion

Answer
The estimated difference in proportion is computed as follows;
Females: p= 15
10 0 =0.15
Males: p= 12
100 =0.12
So the difference in proportion is 0.15−0.12=0.03
Therefore the difference in proportion is 0.03.
Question 10:
Standard error of the mean
Answer
The formula for the standard error of the mean is given as
S . E ( x ) = s
√ n
¿ 4.5
√12 =1.299
Therefore the answer is b which is 1.299.
Question 11:
i) Histogram
Answer
Histogram for Dataset a