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CIM 250 Midterm Review questions and answers verified 2024
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CIM 250 Midterm Review questions and answers verified 2024
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CIM 250 Midterm ReviewA group of healthy teachers is assembled and followed over time in order to
determine how many of them develop breast cancer. This is an example of a:
- correct answer ✔prospective cohort study
A major advantage of retrospective (case-control) studies is: - correct answer
✔They are better at establishing temporal sequence of events than
prospective cohort studies.
All of the following are examples of inferential studies except: - correct
answer ✔A calculation of colon cancer incidence rates in the California
population.
When you want to make a statement about a population using information
from a sample, you use________statistics. - correct answer ✔inferential
The area of statistics that describes the data is called ______ statistics: -
correct answer ✔descriptive
A census is: - correct answer ✔an enumeration of an entire population
A characteristic of a sample is called a(n): - correct answer ✔statistic
A radio station is conducting a promotion where they are giving away a total of
100 free iPhones. Every 10th caller will receiving an iphone until all of them
have been given away. This is an example of a: - correct answer
✔systematic sample
, A study of attitudes about flexible workplace policies is being conducted in a
large company. An e-mail survey is distributed to a complete list of
employees. Participation in the survey is anonymous and voluntary. This is an
example of a: - correct answer ✔convenience sample
All of the following are important reasons for random sampling except: -
correct answer ✔[It decreases the validity of a study]
It is the basis for statistical theory that underlies hypothesis tests and
confidence intervals.
It helps convince others that the trial/study was conducted properly
It avoids known and unknown biases on average
An auto analyst is conducting a satisfaction survey, sampling from a list of
10,000 new car buyers. The list includes 2,500 Ford buyers, 2,500 GM
buyers, 2,500 Honda buyers, and 2,500 Toyota buyers. The analyst then
randomly samples 100 buyers of each brand. This is an example of: - correct
answer ✔stratified sampling
Bias occurs when: - correct answer ✔A study sample is not representative of
the underlying population
A characteristic of a population is called a(n): - correct answer ✔parameter
In simple random sampling, each subject has an equal chance of being
selected. - correct answer ✔TRUE
In interpreting the results of epidemiologic studies, the size of a sample is
more important than the way in which it was selected. - correct answer
✔FALSE
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