Sample size and power
In conducting a priori test on the required sample size given the effect size, alpha which is the size of the test and minimum power that is 0.80 in our case then the required sample size is 159. The actual power of the test that gives the required sample size is equal to 0.8048873. This may be because the power gives a sample size with a decimal point, and we have to round off to the nearest whole number because it does not make sense to have a sample size with a decimal point. The data points in each Continue reading...