Sample size calculation
On 14-01-02 07:42 AM, Bonitta gianluca wrote:
Thank You for soon reply fisrt of all i have the dataset and r script maby i can send and you can help to prototipe the script in r ...for example for professor Ben : i had seen long power pack but i think this need repeated measure for the use i have not repeated measure ...do You think is possible to suite long power pack for my case?
I didn't necessarily mean that you should use longpower, I was just giving a list of packages geared toward mixed model power analysis.
I have also try simulative way for post hoc power calculation.... but this yeld pap power analysis paradox... when p-value is "big" power is low , when p-value is "small" ower is hight so i prefer to determinate a priori power ....
I didn't mean that you should do a post hoc power analysis (I completely agree with you that post hoc power analysis is a bad idea!)
thank you so much
I just pushed an example of what I mean by simulation-based power analysis to Rpubs: http://rpubs.com/bbolker/11703 cheers Ben Bolker