Definitions for "Percentiles"
The 50th percentile is the middle value in a ranking where all values are ordered from the highest to the lowest. The 75th percentile is the middle value between the highest value and the 50th percentile of a ranking.
values of ranked data separated into one hundred groups of equal size, especially when sample size n is very large.
These are income values which divide the population, when ranked by income, into 100 equal sized groups. Ten per cent of the population have incomes below the 10th percentile, 20 per cent have incomes below the 20th percentile and so on.
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