Patrick wants to test three different brands of baseball bats to see if they impact how far he can hit a baseball. He goes to Sports Authority and buys a Brueller bat, a Yost bat,
and an Emerald bat. He takes his first swing at home base with the Brueller bat and hits
the ball 25 m. He takes his second swing at home base with the Yost bat and hits the
ball 20 m. He takes his third swing at home base with the Emerald bat and hits the ball
55 m.
1. What is the independent variable? (5 points)
I
2. What is the dependent variable? (5 points)
3. What is the controlled variable? (5 points)