In my previous mock interviews, I've found one problem that I need to work on with: completing the case fast and efficiently. In some cases, I spend around 40 minutes to solve a case. Some feedback that I received was:
(1) Communication: be precise and concise. (I tend to explain too much about why I ask for a data, or why I want to look in to various factors, etc)
(2) Should proceed through the case “faster” in some steps. (My reflection is that I tend to think in a cautious / broad way, and sometimes I'm not confident to jump in a direction shortly and decisively).
Would appreciate if you could share some improvement tips. Thank you.