So I was considering triple majoring (or double or single: I’m in high school) in Computer Science, Mathematics, and Statistics. I have some questions, so feel free to leave your thoughts and answers below. They will be greatly appreciated 
A bit about me: Attending UW Madison in 2015 
Will the three give me a greater advantage when applying to top tier graduate schools for a PhD in one of the three?
Will the three (without a PhD) help me get a job better than two or one? If not, what is best?
If I were to pick two, which two would help me get a job or help me gain entrance to graduate schools?
I am considering multiple majors because of my interests, and also because I have almost 60 credits from high school work, and a 4 year scholarship, so I can take my time.
What do you all think? Thanks again
More than one major may allow you to seek more possible jobs relating to either major, though it will not necessarily get you a better job than what you would get with the major that is associated with the better jobs (however you define “better”). There may be a few jobs where it would be helpful to have knowledge in the various subjects, although typically one would only need a major in the primary subject relating to the job and appropriate elective course work in the others.
PhD programs are focused on specialization within your major; additional majors would not really help, though out-of-major electives in support of your specialization may be useful (e.g. algebra and number theory from math if you want to go into cryptography in computer science).
Computer science majors obviously target jobs involving design of computers and software. Math and statistics majors more often target finance and actuarial jobs, with appropriate electives in economics, finance, etc… Some also move into computer jobs, but that would be redundant since you would be doing computer science anyway.