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EVs do indeed raise stats. For every 4 EVs that go into a certain stat, the stat raises by 1 point. A Pokemon can earn a maximum of 510 EVs, and no more than 255 EVs can go into a specific stat. Every Pokemon yields at least one EV.
Answered so closed - as said, ask questions in the Help thread sticky as linked above, please. There's plenty of other guides as well a google search away.