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What is standard deviation? It is in my data sufficiency practice question, and I am thoroughly confused! Help?
Standard Deviation??
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Source: Beat The GMAT — Problem Solving |
Dude you gotta hit Gmat's OG soon if you don't know what SD is. Standard deviation, range, median mean are frequently tested concepts on GMAT. Btw OG = official guide of GMAT
200 or 800. It don't matter no more.
