فهرست نشریات علمی دسترسی آزاد ایران

The execution of scientific research necessitates the diligent collection of relevant information. Datacollection methodologies can be broadly classified into two categories: a census, which entails gatheringinformation from the entire population, and sampling, which involves selecting a subset from thatpopulation. Accessing the entirety of a population can often be challenging, costly, and time-consuming,prompting researchers to favor sampling methods. Within the realm of statistics, sampling plays a pivotal rolein evaluating hypotheses regarding the characteristics of a population.