Math means/averages

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Question język polski Answer język polski
Arithmetic mean/average
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(a1+a2+...+a_n)/n
Geometric mean/average
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\n|a1*a2*...*a_n\
Harmonic mean/average
start learning 		Harmonic mean/average in Polish
n /(1/a1+1/a2+...+1/a_n)
Power mean/average
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\k| (a1^k+a2^k+...+a_n^k)/n \
Harmonic for k=-1 v Arithmetic for k=1 v Square for k=2
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