Interview Question

How would you go about investigating if a certain trend in distribution is due to an anomaly?

The rise in global average temperature led to an increase in the number of cars selling around the world. Does that mean that an increase in the number of cars sold caused climate change?

Executing a binary classification tree algorithm is a simple task. But, how does a tree splitting take place? How does the tree determine which variable to break at the root node and which at its child nodes?

We know that one hot encoding increases the dimensionality of a dataset, but label encoding doesn’t. How?

How to increase the marketing of online games?

We need to find the data for each users for their only last 30 days. For e.g , two A,B men join the company in Jan 2020 and they swipe badge every for in/out. All in/out swipe timing has stored in ...

SUBSCRIPTIONS user_id start_dt end_dt 1 01/01/18 31/03/18 2 01/02/18 30/04/18 3 01/01/18 31/01/18   CM first_dt last_dt 01/01/18 31/01/18 01/02/18 28/02/18 01/03/18 31/03/18 Find no. of subscribers each month or MoM. Output be like : Month             subcriber_count Jan’18              2 Feb’18             2 Mar’18            2 Apr’18             1