In descriptive statistics, a decile is used to categorize large data sets from the highest to lowest values, or vice versa. Like the quartile and the percentile, a decile is a form of a quantile that divides a set of observations into samples that are easier to analyze and measure.

What is decile example?

Deciles are similar to quartiles. ... For example, if you were in the 99th percentile for a particular test, that would put you in the decile ranking of 10. A person who scored very low (say, the 5th percentile) would find themselves in a decile rank of 1.

What is the best decile?

The top decile contains 10% of the population most likely to respond and the bottom decile contains 10% of the population least likely to respond, based on the model scores.