What is asymmetry?

What Does asymmetry Mean

There are concepts that are only understood by opposition: asymmetry is one of them. The dictionaries define this term as the lack of symmetry or otherwise thereto. It is essential, therefore, to know what symmetry is to understand the idea of ​​asymmetry.

With origin in Latin symmetria and more remote antecedents in the Greek language, symmetry is the quality that refers to the correspondence in terms of the dimensions, shapes and locations of the various components that make up a whole. Symmetry can also be considered with respect to a plane or a position .

When such correspondence does not exist, we speak of asymmetry. In other words: what is not symmetrical is asymmetric . At a general level, it can be said that symmetry is associated with beauty , so that what has asymmetry is not beautiful or is dissonant in its lack of harmony .
This idea of ​​symmetry as a synonym for beauty applies both to living beings and sculptures and, in general, to any creation of man or element of nature. For example, many people often pursue device designs such as televisions or mobile phones that display a symmetrical appearance, as opposed to that of older tube televisions (with the screen on one side and the controls on the other) and mobile phones. disk (with the cable that connected the receiver to the base hanging to one side of the device).
However, not all consider asymmetry as a negative trait; On the contrary, in all areas there are many people who appreciate the unique quality that an asymmetric arrangement of features or forms can impress on a living being or on any natural or artificial object. In this same line of thought, symmetry is associated with the artificial, with something that has no life, such as a mannequin, and is not valued positively in a sculpture, since it represents a human being taking into account its plane emotional.
Statistical asymmetry
The indicators thanks to which it is possible to identify the degree of symmetry or asymmetry present in a probability distribution (a function that assigns the probability of their occurrence to a series of determined events ) of a random variable (also known by the name of stochastic variable , it is a function that assigns events to real numbers) without the need to represent it graphically, they are called asymmetry measures .

In this context, taking as a reference the axis that passes through the mean of said distribution, the line parallel to said axis is called the axis of symmetry. When the number of values is equal to both sides (to the right and to the left), the distribution is said to be symmetric; in this case, the number of positive and negative deviations also coincide.
The asymmetry on the right , also called asymmetry negative , occurs when the number of values to the right of the average is greater than the negative (found on the left); this can also be expressed by saying that the tail is longer on that side of the mean . The opposite case is called left or negative skew .
A concept related to asymmetry within the field of statistics is kurtosis , also called pointing . It is the level of acuity or flattening that presents a probability distribution with respect to the normal one; in other words, it is the measurement that is used to determine how sharp it looks . The three possible types of kurtosis allow to speak of leptokurtic , mesocúrtic and platicúrtic distributions , according to the concentration is high, normal or low, respectively.

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