Sample size determination is the act of choosing the number of observations to include in a
statistical sample. The sample size is an important feature of any empirical study in which the goal is to make
inferences about a
population from a sample. In practice, the sample size used in a study is determined based on the expense of data collection, and the need to have sufficient
statistical power. In complicated studies there may be several different sample sizes involved in the study: for example, in as
survey sampling involving
stratified sampling there would be different sample sizes for each population. In a
census, data are collected on the entire population, hence the sample size is equal to the population size. In
experimental design, where a study may be divided into different
treatment groups, there may be different sample sizes for each group.
Sample sizes may be chosen in several different ways:
Unless in some far out reach of the world 4 games out of 20, or 20% of your games played, is a LARGE sample size.
And I cannot read..ok, lol.