Dr Gulshan S. answered • 07/17/21
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Hello Rin,
The rule is more the number of observation more accurate is the result. 20 observations are reasonable to get mean value
Dr Gulshan S.
tutor
Hello Rin
Appreciate your question
Simulation studies show that a good rule of thumb is to have 10-15 observations per term in multiple linear regression. For example, if your model contains two predictors and the interaction term, you'll need 30-45 observations.
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07/17/21
Rin F.
what would be the two predictors?
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07/18/21
Rin F.
Hi! Can you please expound further on why its 20 trials and not 50 or 3? Is there some kind of material that I could reference? Thank you so much!07/17/21