How do you handle missing values in python or r?
What is a document database?
Define a sql query? How do you use sql in sas, python, r languages?
Why do you need a for loop? How do you do for loops in python and r?
What is random forests and how is it different from decision trees?
What is a z test?
Why do you need a for loop?
How would churn help predict and control churn for a customer?
Where linear optimization is used?
What is an api? What are apis used for?
What is logistic and linear regression? Name some packages in r and python for building regression models.
What is t test?
What is the travelling salesman problem?
Define a sql query? What is the difference between select and update query?
what is json and what is xml?