Experimental versus Observational Study
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an observational study?
Back
An observational study is a type of research where the researcher observes and records behavior or outcomes without manipulating any variables. It does not involve any intervention.
2.
FLASHCARD QUESTION
Front
What is an experiment?
Back
An experiment is a research method where the researcher manipulates one or more variables to determine their effect on a dependent variable. It often involves a control group and random assignment.
3.
FLASHCARD QUESTION
Front
Identify the key difference between observational studies and experiments.
Back
The key difference is that experiments involve manipulation of variables, while observational studies do not.
4.
FLASHCARD QUESTION
Front
Example of an observational study:
Back
A study that examines the relationship between smoking and lung cancer by observing patients without intervening.
5.
FLASHCARD QUESTION
Front
Example of an experiment:
Back
A study where participants are given different doses of a medication to test its effectiveness on reducing symptoms.
6.
FLASHCARD QUESTION
Front
What is a control group?
Back
A control group is a group in an experiment that does not receive the treatment or intervention, used as a benchmark to measure the effects of the treatment.
7.
FLASHCARD QUESTION
Front
What is random assignment in experiments?
Back
Random assignment is the process of assigning participants to different groups in an experiment randomly, ensuring that each participant has an equal chance of being placed in any group.
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