Where you are on a measure of 0-100% Aka Percentiles. Like if you are in the upper quartile, lower quartile
Percentiles
The percent of all the data that are less than or equal to a specific data value Eg. if you are above the 80%, then you are in the top 20%
Percentile Rank
If we were to organize our data from smallest to largest, then the percentile index(or rank) that is the start of our percentile. e.g. for a list like [0,2,6,7,21,53], the top 70% percentile rank would be index 5.
R = p(n+1)/100 p is the percentile n is the size of the population R is a whole number, always round down
Percentile
p = L is the number of data less than the data point E is the number of data equal to the data point n is the size of the population
It is impossible to have a 100 percentile. 100 means that the only data is homogenous.