Instead of "My Hypothesis", just have "Hypothesis".
Don't use "A wild graph appeared". They won't get it unless they're one of those cool teachers.
You don't have to link to the site that you used to make that graph. You can make graphs in Word anyway.
Use Times New Roman, size 12, unless you were specified to use Arial.
On the table below the graph, instead of using ">>>" and "vvv" as arrows, draw them in after printing unless you're emailing it.
Otherwise, well done.