Standard deviation

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manhhiep2509: Senior | Next Rank: 100 Posts; Posts: 32; Joined: Mon Mar 04, 2013 1:18 am; Thanked: 1 times; GMAT Score:700

by manhhiep2509 » Fri Sep 26, 2014 7:01 am

Toss a coin 4 times.
What is the standard deviation of the number of heads that you expect to see in those four tosses?

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Source: Beat The GMAT — Problem Solving | Fri Sep 26, 2014 7:01 am

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by [email protected] » Fri Sep 26, 2014 11:04 am

Hi manhhiep2509,

The GMAT is not going to ask you to calculate Standard Deviation in this way. This is the second non-GMAT question you've posted, so I'm curious if you're just taking a Stats class or if you're actually studying for the GMAT?

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

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