The calculation of the size of samples is determined with different types of sampling such as simple sampling, which needs statistical data such as the level of confidence, heterogeneity, the margin of error and the population that will be investigated.
The stratified sampling calculation is determined taking into account the number of strata to be used.
The calculation of sampling by conglomerates that must be taken into account the population, the number of conglomerates to obtain optimal results is determined.