Greek letter needed for question

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1)      In a normal distribution, the mean, median, and the mode are all the same.  They are denoted by the Greek letter _____.

Apr 4th, 2015

Sigma, σ

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Apr 4th, 2015

not right, it's "mu" , μ 

Apr 4th, 2015

Thank you!

Apr 4th, 2015

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Apr 4th, 2015
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Apr 4th, 2015
Jun 27th, 2017
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