Dunnhumby

1. As a data scientist, what would you do if a store's sales were declining?

2. What is partitioning, and how do you use coalesce and repartition?

3. You have two brands of milk that you can sell in your store. Which one would you pick?

4. How do you prioritize features? Give an example.

5. Diff between test plan and test strategy Diff between test case and test scenario How to find the quality of a software Diff between defect, bug , error and failure etc