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Australian Water Information Dictionary
decile
One of a series of threshold values that divides a set of ordered data into 10 groups with an equal number of data points in each.
For example, consider a dataset of annual rainfall totals arranged in increasing order. The first decile is a value with 10% of the data below it and 90% above it. The eighth decile is a value with 80% of the data below it and 20% above it.
Related: quantile
This definition applies to:
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