Ask HN: Is there a resource to excelling at Analytical Interview Questions?

I've been interviewing for a while now, and I have a FB interview coming up. As a people manager, I've been out of touch with getting comfortable solving questions based on "Data Driven Decision making" such as interpreting charts, and case studies. I am realizing now that I perform poorly on these types of questions. It could be due to the pressure, or plain incompetence, but I'd like to get better at it for my career's sake. How do you guys prepare/study for Analytical interviews?