Independent and dependent variables are mathematical tools used in an experiment to keep track of what's going on. They allow you to maintain control over your experiment in a quantitative way. That is, using them, you will be able to measure your results and draw accurate conclusions.
Compton is not that bad. I think the most dangerous streets of Compton are located in North Compton. For example, in Long Beach Blvd, border with Lynwood, you see a lot of prostitution. Some nice parts of Compton are the are located in the Sunny Cove area near the airport and small pockets all throughout the city.
The City of Compton, is a city not a part of the city of Compton. I have friends that they say the went to Compton, and when I asked them what part, the say in Compton Ave and Florence or in Crenshaw, which it is not near from the city of Compton. Second there are really nice areas in Compton too.