Interquartile Range

The interquartile range or midspread is a measure of dispersion of a data set. It is equal to the difference between the 75th and the 25th percentile of the data set. The interquartile range does not take into account outliers and is a significant robust measure of scale.


interquartile range

Indicator Description

The interquartile range is a measure of dispersion which is based on dividing a data set into quartiles. Quartiles divide a rank ordered data set into four equal parts. The values that separate the the four parts are called first, second and third quartile. The interquartile range is obtained by subtracting the first quartile from the third quartile.

Therefore, the interquartile range indicator may be used with longer chart lookback periods, in combination with other indicators.

Other Library indicators

Other indicators from the statistical analysis category include the Mean Absolute Deviation (Around the Median), Median Absolute Deviation (Around the Median), Moving Mean TPO, Moving Median TPO, Moving Mode TPOMoving Mean VWTPO, Moving Median VWTPO, Moving Mode VWTPO, Moving Median, Standard Deviation, Volume Weighted Standard Deviation, Volume Weighted Mean Absolute Deviation and the Modified Z Score. You may furthermore review the Raff Channel, Daily Regression Channel and Indicator Spotlight newsletter post on the Linear Regression Channel.

The indicator is available for NinjaTrader 8.

Interquartile Range