Concept in Definition ABC

The term percentile is an integral part of the enormous number of concepts that group the math, therefore, it turns out to be of common and frequent use within the aforementioned field and in the lexicon of those who dedicate themselves to study and education. teaching Of the same.

The percentile is cEach one of the ninety-nine segments that result after dividing something into one hundred parts of equal frequency.

It is represented by the capital letter P.

When we refer to a specific percentile, it will be the value of the variable to observe and that is below the percentage that has been given. So P20 will be the score that will be attributed to it when it is below 20% of the ordered values ​​that have been found.

The method The simplest way to calculate the percentile is the following: x = n * i / 100. In this formula the lowercase letter n represents the number of elements in the sample, while the lowercase letter i will be the percentile. Behind the realization

From this operation, a real number will be obtained with an integer part, which will be called E and a decimal part, which will be called D.

One of the most frequent uses of the percentile is to satisfy the need to obtain specific data regarding certain issues that make deeper knowledge of a society or community, for example, you want to evaluate the growth of the kids, then, pediatricians, will base their evaluation precisely in percentile tables to carry out the aforementioned evaluation; They will then be inspired by tables of different percentiles depending on whether they are women or men, with average values, according to age and age. country corresponding. The most used are those of weight, height and perimeter cranial.

In the aforementioned lines, several lines will appear, each with a number, for example, 3, 10, 25, 30, 75, 90, 97. Half of the children of the same age are in the 50th percentile, while 25% are above that level and the other 25% are below that level. All lines will correspond to normal values, if there is a child in the 45th percentile of height it will be interpreted as follows: out of a hundred healthy boys his age 55 are taller than him and 45 are taller low.

Percentile Topics