Joe compared the player statistics from his team's tennis season. he determined that being taller implies that a player has faster serves. what should he say based on his findings? 1-There is no correlation between height and serve speed.
2-There is a correlation between height and serve speed. there may or may not be causation. Further studies would have to be done to determine this.
3- There is a correlation between height and serve speed. However, there is no causation. This is because there is an increase in serve speed with an increase in height.