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CIM 250 Midterm questions with complete solutions 2024
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CIM 250 Midterm questions with complete solutions 2024
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CIM 250 MidtermA 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:
--retrospective case-control study
--cross-sectional study
--prospective cohort study
--ecologic study - correct answer ✔--prospective cohort study
A major advantage of retrospective (case control) studies is: - correct answer
✔They are cost effective and applicable to the study of rare diseases
All of the following are examples of inferential studies except:
--a study of the association between breast cancer and alcohol use conducted
in a study sample drawn from a particular hospital
--a clinical trial to assess the efficacy of a particular drug
--a calculation of colon cancer incidence rates in the California population
--a survey of a random sample of 100 college students to assess attitudes
about drug use. - 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 receive an iPhone until all of them
have been given away. This is an example of a:
--stratified sample
--random sample
--systematic sample
--convenience sample - 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:
--random sample
--convenience sample
--cluster sample
--stratified sample - correct answer ✔convenience sample
All of the following ae important reasons for random sampling except:
--It decreases the validity of a study
--it avoids known and unknown biases on average
--It helps convince others that the trial/study was conducted properly
--It is the basis for statistical theory that underlies hypothesis test and
confidence intervals - correct answer ✔It decreases the value of a study
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