# Outliers Definition

1 1 6 _**13**_ 13 14 14 **14** 15 15 16 _**18**_ 18 18 19

IQR = Q3 - Q1 = 18 - 13 = 5

**Q1 - 1.5 \* IQR > outliers > Q3 + 1.5 \* IQR**

Q1 outlier = 13 - (1.5 \* 5) = 5.5

Q3 outlier = 18 + 1.5 \* 5 = 25.5

so the two one's are outliers.
