This question can help the interviewer determine your level of expertise with data science programming languages. Use this opportunity to highlight any experience you have using specific languages and how it helped you complete projects more efficiently.
Example: “I’ve worked with Python, R and SQL extensively throughout my career as a data scientist. I find that these three languages are most useful for analyzing large amounts of data and creating reports based on those analyses. In my last role, I used Python to create an algorithm that analyzed customer purchasing patterns and determined which products we should add to our inventory. This allowed us to increase sales by 10% within the first quarter.”
