Find the number of users who called three or more people in the last week.

Focus on outlining the steps to analyze user call data effectively. Start by defining the data structure you would need, such as user IDs and call logs, and explain how you would aggregate this data over the last week. Discuss the importance of filtering users based on the number of unique calls made and how to handle potential edge cases, like users who may have called the same person multiple times. Finally, consider how you would present this data to stakeholders, emphasizing clarity and actionable insights.