1.

What are the ways to detect outliers? Explain different ways to deal with it.

Answer»

Outliers are detected using two methods:

  • Box Plot Method: According to this method, the value is CONSIDERED an outlier if it exceeds or FALLS below 1.5*IQR (interquartile range), that is, if it lies above the top quartile (Q3) or below the BOTTOM quartile (Q1).
  • Standard Deviation Method: According to this method, an outlier is defined as a value that is greater or LOWER than the mean ± (3*standard deviation).


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