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More than 650 million users
Average user has 130 friends
Facebook is worth about $80 billion
1 in every 13 people on Earth is on Facebook
launched on April 27, 2007
Manhattan, New York
"dashboard" interface
38,000 ppm
Ho: Facebook, Tumblr, and Twitter are equally preferred.
- P(facebook)= 1/3
Ha: Facebook is preferred more than Tumblr and Twitter.
- P(facebook)>1/3
One Proportion Z-Test
Reject the Ho
Mark Zuckerberg
David Karp
Lady Gaga
Justin Bieber
Katy Perry
Feb 27 2012
46.2 million blogs
177 million tweets March 2011
March 2006
Jack Dorsey
Which do you use the most?
By: Joshua Cruz and Miranda Ramirez
Per. 4
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