Answer:
The correct answer is:
3. inferential statistics
Explanation:
Inferential statistics is the branch of statistic sciences that generalizes the information in order to determined some fact about a certain circumstance or fact. For example, according to inferential statistics, it is possible to take a sample of the population of 100 individuals, and establish a characteristic patron of behavior of the general population; according to what has been found in the specific sample of 100 individuals who would represent the whole population.