What is Criterion:
The criterion is called the principle or norm according to which one can know the truth, make a determination, or give an opinion or judge on a certain matter. The word, as such, comes from the Greek κριτήριον (kritérion), which in turn derives from the verb κρίνειν (krínein), which means 'to judge'.
The criterion, in this sense, is what allows us to establish the guidelines or principles from which we can distinguish one thing from the other, such as, for example, what is true from what is false, what is correct from what is incorrect, what has sense of what not. Thus, the criterion is associated with the rational faculty of the human being to make decisions and make judgments.
In this sense, a moral criterion would be, for example, one that dictates the norms of what, in a society, can be considered as correct or as ethically appropriate, according to the values and principles that have been instilled in us as individuals.
Hence, the criterion also refers to the ability of a person to make a judgment, adopt an opinion or make a resolution on any issue: "I have no criteria to express my opinion on conceptual art issues, because I don't know anything about that."
In this way, criterion can also be used as a synonym for judgment or discernment: "Paul always prefers to use old versions of computer programs, because, according to his criteria, they are more stable."
The criterion is fundamental when making decisions, making evaluations or expressing our point of view with respect to something. In this sense, the criterion is not only applied in all disciplines of knowledge, but also in the most diverse facets of life.
The evaluation criterion is called the set of principles, norms and guidelines according to which an evaluative judgment is issued in relation to the object evaluated. The evaluation criteria, in this sense, are used fundamentally in the evaluation processes of school education. Its purpose, as such, is to establish objective patterns that allow an assessment of the level of learning of a student in relation to the topics and objectives of teaching a subject, among other things.
As a criterion of divisibility, it is called the mathematical rule according to which it can be determined whether one number can be divided by another, without the need for division. As such, there are criteria for dividing all numbers. Some examples of divisibility criteria are the following: to divide a number by two, it must always end in zero or an even number; to be divisible by 3, the sum of its figures must be a multiple of three; to be able to divide a number by 5, the last of its numbers must end in five or zero; To be divisible by a number by nine, the sum of its figures must be a multiple of nine.