Okay, let’s tackle this. So Lin Lin has 5+ years of experience as a data scientist, which is a relatively strong background. Her expertise in machine learning and data visualization is also in demand. Location is Seattle, WA, which is a hub for tech companies and startups. According to national averages, data scientists with similar experience can charge between $100-$200 per hour. However, considering the cost of living in Seattle, which is higher than the national average, I would estimate her rate to be on the lower end of that range. Maybe around $125 per hour, considering the local market demand and her level of experience.