Percentiles

n. value that demonstrates a rank based on one hundred percent

Noun
1. (statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total
(synonym) centile
(hypernym) mark, grade, score
(classification) statistics

The percentile (this term was first used by Galton, 1885a) of a distribution of values is a number xp such that a percentage p of the population values are less than or equal to xp. For example, the 25th percentile (also referred to as the .25 quantile or lower quartile ) of a variable is a value (xp) such that 25% (p) of the values of the variable fall below that value.
Similarly, the 75th percentile (also referred to as the .75 quantile or upper quartile ) is a value such that 75% of the values of the variable fall below that value and is calculated accordingly.

= percentile, percentile.
Ex: Only at the 90th percentile of articles did the percentage of periodical titles in the cited literature significantly exceed that of the citing literature.
Ex: Only at the 90th percentile of articles did the percentage of periodical titles in the cited literature significantly exceed that of the citing literature.

PERCENTILI. DATI PERCENTILI