EXL Service General Analytics interview questions

-Introduce yourself. -Explain about project.(asked some questions about projects) -How to use group by function in python. -Add a new column in a dataframe by adding existing column values. -Explain Random forest model. -Puzzle:mis-levelled jar questions(you can find it in google) -Types of join in SQL -Find Top 3 salary of employee using sql -Difficult questions from Confusion Matrix in machine learning related to projects. -Guesstimate question:How many tennis balls can you fill in a school bus?