Federer Formula Sample Size. Dell RB Holleran S Ramakrishnan R 2002 Sample size determination. Structure of the experiment Method for analysis Chosen significance level α usually 5 Desired power usually 80 Variability in the measurements if necessary perform a pilot study The smallest meaningful effect 33 A formula n22 21 2.
The data used for resampling is a paper tensile strength test data from paper with 6 treatments and 2 types of paper circulating on the market used as control. The data in the. Nf n 1 n N Where.
The second method is to use the formula for the sample size for the mean.
Federer Method and Gomez Method. The Federer Method The number of samples according to Federers formula13 follows the following formula. Nov 04 2012 Sample size is given by. Dell RB Holleran S Ramakrishnan R 2002 Sample size determination.
