You collect the data from number of hours that elementary school children spend playing violent video games and the number of times they have gotten into a fight with other kids. You analyze the data and find that playing violent video games is correlated with fighting r=0.40. What can you safely conclude? Choose one from a list below. 1. That playing violent games causes kids to fight more. 2. That kids' aggressiveness causes them to play more violent games. 3. That some third factor causes both violent video games and fighting. 4. All of the above. 5. None of the above