Conduct a "focus group" about a specific topic of interest to you (e.g., mass transit in your geographical area). This means that you simultaneously interview at least three (but less than a dozen) persons about the topic, and spend at least 15 minutes. Describe who you got to participate (e.g., describe each person by gender, age, economic activity). In what ways would this small sample not be representative of the local population? List the questions you asked and summarize the sample's responses. What did you learn about the topic? What additional information do you now know that you would need to get on this topic?