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Author Question: Even in a well designed experiment, there will always be confounding variables that we have ... (Read 57 times)

amal

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on: Jul 24, 2018
Even in a well designed experiment, there will always be confounding variables that we have neglected to measure. How can we reduce the chances that an observed association is due to those confounding variables? Name two ways.

Question 2

What is the only legitimate way to try to establish a causal connection statistically between two measurement variables?


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31809pancho

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

1) USE A LARGE SAMPLE OF SUBJECTS; 2) RANDOMLY ASSIGN SUBJECTS TO TREATMENTS.

Answer to Question 2

THROUGH THE USE OF RANDOMIZED EXPERIMENTS.


amal

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Reply 2 on: Jul 24, 2018
Thanks for the timely response, appreciate it

gcook

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Reply 3 on: Yesterday
Wow, this really help

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