Sample size calculation
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 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 .... thank you so much