Learning SAS? Welcome to the exclusive online community for all SAS learners.

Determine number of observation required

Posts: 34

Determine number of observation required

How to dne whether the number of data required to be taken for a experiment?

eg: I need to take a set of data for the noise mapping, how many should I take ?

Frequent Contributor
Posts: 136

Re: Determine number of observation required

Posted in reply to koksiang100
whilst there are heuristic guides for sample size to control for type I or type II error in regression models, logit models, they often assume fairly low levels of covariance amongst potential predictors. I find the guidelines for SEMs - 10 x the number of parameters to be estimated for any single model - to also be a good guideline for generalised mixed models.
Ask a Question
Discussion stats
  • 1 reply
  • 2 in conversation