What was your hypothesis? According to your data, do you think your hypothesis was correct? What is latent heat? How does it show up on a phase diagram? When a substance is absorbing latent heat, what is happening to it? According to your data, what are the melting and boiling points of water? How can you tell? What practical applications are there for this procedure?
Uhhh well then are you asking for your whole science project?
A hypothesis is what you think will happen... hope that helps