Bank of America interview questions

Tell me the definition of Relationships banker in your own words.

1. Assumptions of linear regression (OLS). what if some of the assumptions are not met? 2. How to tackle data imbalance? 3. Machine learning evaluation metrics, e.g., precision, recall, f1, and usefulness. 4. Dataframe related questions. 5. Algorithm to find the longest non-repeating sub-string from a string. 6. SQL left, right, and inner join differences.