What does n represent in the Vrms equation?

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Homework Statement


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Homework Equations



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in my equation for Vrms I am confused to as what values I use for "n" and what "n" stands for in the equation. any help would be greatly appreciated! thanks pf
 
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  • Homework problem text with a table of 15 trial velocities in m/s and an empty v^2 column, plus the formula Vrms = sqrt((V1^2 + V2^2 + ... + V15^2)/n).
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would it be 15 and I am simply over thinking the situation?
 

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