- Outliers: refers to objects with characteristic different from most of the other objects

Can detect by

- Summary Statistics
- Box Plots
- Other visualization techniques - Plots
- more advanced approaches like Anomaly Detection

Modified box plot

- is a variation of the box plot
- can be used to find outliers

Also if we just draw the values, it'll be possible to see the outliers

Some Statistical, ML and DM models are sensible to outliers

- e.g. Linear Regression
- it's important to detect them and only after build a model