Standard Deviation

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goyalsau: Legendary Member; Posts: 866; Joined: Mon Aug 02, 2010 6:46 pm; Location: Gwalior, India; Thanked: 31 times

by goyalsau » Sat Oct 09, 2010 2:19 pm

HI! guys,

Options of the given question are,

46
47
48
49
50

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Saurabh Goyal
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Source: Beat The GMAT — Problem Solving | Sat Oct 09, 2010 2:19 pm

sanabk: Master | Next Rank: 500 Posts; Posts: 174; Joined: Fri Apr 02, 2010 3:41 pm; Thanked: 6 times; Followed by:1 members

by sanabk » Sat Oct 09, 2010 3:15 pm

SD=2

M-3(SD)=43
M=43+3(SD)=43+3(2)=43+6=49

E

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