Interdecile Range Formula

The interdecile range is a measure of the dispersed set of data and is a statistical measure of center tendency. The difference between the ninth and tenth decile is called as the interdecile range. The interdecile range formula below explains the interdecile range, where the values of 10th decile is subtracted from the 90th decile. The interdecile range is similar to the interquartile range. Click the interdecile range calculator link to calculate the interdecile range.


IDR = D90 - D10


IDR = Interdecile Range
D = Decile

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The interdecile ratios are used to measure the income inequality. The range of interdecile can be calculated using the interdecile range formula.

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