NUTD3101 Biostatistics test questions
with complete solutions
Which of the following statements describes a normal distribution?
a. most results are clustered around a central point
b. results are evenly distributed around a central point
c. results illustrate a bell-shaped curve when graphed
d. fewer results in the tail of the curve than in the center
e. all of the above - correct answer ✔✔e
Outliers are always the result of measurement error?
a. true
b. false - correct answer ✔✔b
The most appropriate test to determine difference in mean age of football players between AFL teams is:
a. Chi-square
b. paired t-test
c. ANOVA
d. Linear regression - correct answer ✔✔c
The mean, median and mode of a set of data are the same. This indicates:
a. 68% of the data will fit within +/- standard deviation
b. the distribution follows a bell shaped curve
, c. the mean could be used as the measure of central tendency
d. all of the above - correct answer ✔✔d
In a study of the effect of meat intake on cardiovascular disease in middle-aged men, meat intake is:
a. Dependent variable
b. Independent variable
c. Outcome variable
d. None of the above - correct answer ✔✔b
Spearmans correlation is best described as:
a. an F Statistic
b. a p-value
c. an r-value
d. a t statistic - correct answer ✔✔c
95% confidence intervals are generally wider when the sample size of the study is small?
a. True
b. False - correct answer ✔✔a
Standard deviation indicates the degree of variation from the mean of a set of data?
a. True
b. False - correct answer ✔✔a
What kind of data would be generated when a researcher assigns dietary intake to groups of intake in kJ?
with complete solutions
Which of the following statements describes a normal distribution?
a. most results are clustered around a central point
b. results are evenly distributed around a central point
c. results illustrate a bell-shaped curve when graphed
d. fewer results in the tail of the curve than in the center
e. all of the above - correct answer ✔✔e
Outliers are always the result of measurement error?
a. true
b. false - correct answer ✔✔b
The most appropriate test to determine difference in mean age of football players between AFL teams is:
a. Chi-square
b. paired t-test
c. ANOVA
d. Linear regression - correct answer ✔✔c
The mean, median and mode of a set of data are the same. This indicates:
a. 68% of the data will fit within +/- standard deviation
b. the distribution follows a bell shaped curve
, c. the mean could be used as the measure of central tendency
d. all of the above - correct answer ✔✔d
In a study of the effect of meat intake on cardiovascular disease in middle-aged men, meat intake is:
a. Dependent variable
b. Independent variable
c. Outcome variable
d. None of the above - correct answer ✔✔b
Spearmans correlation is best described as:
a. an F Statistic
b. a p-value
c. an r-value
d. a t statistic - correct answer ✔✔c
95% confidence intervals are generally wider when the sample size of the study is small?
a. True
b. False - correct answer ✔✔a
Standard deviation indicates the degree of variation from the mean of a set of data?
a. True
b. False - correct answer ✔✔a
What kind of data would be generated when a researcher assigns dietary intake to groups of intake in kJ?
