percentile

percentile,

the 100th part of a statistical distribution. A percentile rank of 80 indicates that 20% of the total number of cases scored above and 80% scored below in whatever characteristics were being studied.

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percentile [per-sen´tīl]

any one of the 99 values that divide the range of a probability distribution or sample into 100 intervals of equal probability or frequency; for example, 45 per cent of a population scores below the 45th percentile.

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percentile,

n the number in a frequency distribution below which a certain percentage of fees will fall. E.g., the ninetieth percentile is the number that divides the distribution of fees into the lower 90% and the upper 10%, or that fee level at which 90% of dental professionals charge that amount or less and 10% charge more.

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percentile

1. one of 100 equal parts of a series of measurements, each group being of equal size, and arranged in order of their magnitude; the 20th percentile is the value in the series below which 20% of the values fall.

2. the dividing points between such groups.