The interquartile vary (IQR) is a measure of variability, or how unfold out a knowledge set is. It’s calculated by subtracting the primary quartile (Q1) from the third quartile (Q3). The IQR can be utilized to determine outliers, that are information factors which can be considerably completely different from the remainder of the info set.
The IQR is a helpful statistic as a result of it isn’t affected by outliers. This makes it a extra dependable measure of variability than the vary, which is just the distinction between the biggest and smallest values in a knowledge set.
