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Do they ask such questions in real GMAT???

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Source: — Data Sufficiency |
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by GmatKiss » Fri Aug 19, 2011 8:53 am
Yes this is a valid GMAT question.
We are supposed to know mean, median, mode, range and Standard deviation!
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by finance » Fri Aug 19, 2011 9:53 am
I did not understand...why is the 2% in the third st.deviation???
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