Based on the data of all groups together I can conclude that the solution A is the depressant because this one is reduced that the others, while solution B is the stimulant because it raises the number of pulse. In the other hand solution C is normal because it is the data that it is not too low and not to high. 
Erika,
ReplyDeleteCheck out a few other blogs like, Claudia's and Eric's to see how you should be more detailed. What was the data saying to you that made you decide which substance was which? How did you exactly analyze the data?