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HEALTH 501 Biostats Final Exam Review With complete solution
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HEALTH 501 Biostats Final Exam Review With complete solution
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HLTH 501 BIOSTATISTICS - FINAL REVIEW1. Which of the following types of graphics would be most useful in
demon- strating the frequency of a given outcome as it relates to an
ordinal vari- able?: histogram
2. 5 7 6 9 4 1 2 2
According to the data, which measure, is a better measure of dispersion?: -
Standard deviation
3. Misclassification bias often occurs in case-control studies.: True
4. The incidence rate of X disease in patients receiving the new medication
is calculated by:: patients who are receiving the new medication and
have X disease
/ Total follow-up (years) of the patients who are receiving the new
medication ( times
(x) 1000 to make a whole number if necessary) (a/b if set up in correct
way)
5.A design that is a very detailed report of the specific features of a
particular participant or case is known as?: case report
6. The Cumulative incidence is computed as the number of persons
who develop a disease during a specified period over the number of
persons examined at baseline: false
7.1,000 people are enrolled in a 10-year cohort study. At the start of the
study, 100 have diagnosed CVD. Over the course of the study, 80 people
who were free of CVD at baseline develop CVD. What is the cumulative
1/5
, incidence at 10 years?: 0.089 = 80/900: the number of new events or
cases of disease divided by the total number of individuals in the
population at risk for a specific time interval.
8. Biostatistics is integral to the field of epidemiology, which is defined
as study of health and illness in human populations, patterns of health or
disease, and the factors that influence these patterns.: True
9. The best numerical summaries for dichotomous, ordinal, and
categorical variables are relative frequencies.: true
10.Incidence of disease is the proportion of individuals with the condition
(disease) at a single point in time: false
11.The following data were collected as part of a study of coffee consump-
tion among graduate students. The following reflect cups per day
consumed: 3, 4, 6, 8 ,2, 1, 0, and 2. The standard deviation is approximately
4.: false: use excel to find stdev().
12. Assume a new measure of Intelligence Quotient (or IQ) has been
devel- oped. The mean IQ for the population is 100 and the standard
deviation is
2/5
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