The bolded part above is what matters, and those are numbers to be proud of. With only a few trips, one moron who gives you a low rating can cause a big drop in your average. When you get to several hundred rides, both 5-stars and low ratings will have much less effect. The only question I have is, are you reminding people to rate you, or soliciting 5-star ratings? The reason I ask is that I have been rated by less than half of my riders, but you've been rated by a much higher percentage. One moron not liking a solicitation can ding you.