Job Interview for the post of Junior Data Scientist at Cians India.

How to select alternate rows in SQL ?
How to modify Sql row value ?
How to rename multiple column names in pandas?
How to add a new column name with all lower case letters in pandas?
Difference between Where and Having ?
Difference between Union and Union all?
How many Joins in SQL ?
How to drop column name in to read json file ?
List compression ?
Mutable and immutable ?
List vs tuple ?
How to handle missing values in a dataset?
How to handle imbalance in a dataset ?
What is hyperparameter tuning ?
Naive Bayes Algorithm explained?
Overfitting and underfitting ?
Bias variance trade off?

Date: 19/05/21
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