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Author Question: Suppose you come across an experiment or observational study in which a random sample was not used. ... (Read 66 times)

joe

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on: Jul 24, 2018
Suppose you come across an experiment or observational study in which a random sample was not used. To what extent can (should) the results be extended to a larger population?

Question 2

What is the main purpose of using random assignment in experiments?


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kxciann

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Reply #1 on: Jul 24, 2018
Answer to Question 1

IT DEPENDS ON THE EXTENT TO WHICH THE PARTICIPANTS IN THE STUDY ARE REPRESENTATIVE OF THAT LARGER POPULATION IN TERMS OF THE VARIABLES BEING STUDIED. THIS CAN BE SERIOUS ENOUGH TO NEGATE THE CONCLUSIONS ALTOGETHER.

Answer to Question 2

TO EVEN OUT CONFOUNDING VARIABLES ACROSS TREATMENTS AND OPEN UP THE POSSIBILITY FOR A CAUSE AND EFFECT CONCLUSION.


joe

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Reply 2 on: Jul 24, 2018
Wow, this really help

peter

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Reply 3 on: Yesterday
Excellent

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