Sure, here are some potential behavioral interview questions you might encounter for a Senior Data Scientist position in the marketing industry:

1. Describe a project you worked on where you had to collaborate with stakeholders in a non-technical field. How did you communicate complex technical concepts to them and what was the outcome?
2. Can you walk me through a data-driven decision you made that had a significant impact on the business? How did you arrive at that decision and what were the results?
3. Tell me about a time when you had to deal with incomplete or messy data. What was your approach and how did you handle the situation?
4. Describe a situation where you identified a problem that needed to be solved with data, but the problem was not well-defined. What steps did you take to clarify the problem and how did you ultimately solve it?
5. Give an example of a time when you used machine learning to solve a problem in the marketing industry. What was the problem and what algorithms did you use? How did you evaluate the performance of your model?
6. Have you ever had to persuade a stakeholder to take action based on your analysis? How did you communicate your findings and what strategies did you use to persuade them?
7. Tell me about a time when you had to deal with conflicting priorities or demands from different stakeholders. How did you prioritize your work and resolve the conflict?
8. Can you describe a project where you had to use data visualization to communicate complex insights to non-technical stakeholders? What tools did you use and what were the results?
9. Give me an example of how you have used A/B testing to improve a marketing campaign. What was the hypothesis you were testing and what were the results?
10. Describe a project where you had to work with a large dataset. What techniques did you use to manage and process the data? What were the computational or storage challenges you faced, and how did you overcome them?

These are just a few examples, but they should give you a sense of the types of questions you might encounter in a behavioral interview for a Senior Data Scientist position in the marketing industry. Good luck with your interview!