What is advantage of using apply family of functions in r? How do you use lambda in python?
What is column storage? What is a document database?
What is association analysis? Where is it used?
How do you use goal seek in excel?
What is chi square test?
What is churn?
Where is association analysis used?
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?