5 Questions
Which statement best defines the null hypothesis (H0)?
The null hypothesis predicts no effect or relationship between variables.
What is the purpose of random selection in a study?
To select members of a population for the study's sample.
What is the definition of confounding?
An unmeasured third variable that influences both the exposure and the outcome.
What is the difference between prospective and retrospective study designs?
Prospective study designs are conducted before the outcome has occurred, while retrospective study designs are conducted after the outcome has occurred.
What is the purpose of random assignment in a study?
To sort the sample into control and experimental groups.
Test your knowledge of key terms and definitions related to hypothesis testing and randomization. This quiz will assess your understanding of concepts like alternative hypothesis, null hypothesis, random selection, and random assignment. Challenge yourself and see how well you grasp these fundamental concepts in research methodology.
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