To average sequence terms {arithmetic mean}, add all terms and divide by number of terms: (sum from k = 1 to k = n of a(k)) / n, where a(k) is general term, k is sequence position, and n is number of terms.
To average sequence terms {geometric mean}|, multiply all sequence numbers to get product, and then take product term-number root: (product from k = 1 to k = n of a(k))^(1/n), where a(k) is general term, k is sequence position, and n is term number.
To average sequence terms {harmonic mean}|, divide number of terms by sum of sequence-term reciprocals: n / (sum from k = 1 to k = n of 1/a(k)), where a(k) is general term, k is sequence position, and n is number of terms.
Arithmetic mean {mean, series} can be greater than or equal to geometric mean, which is greater than or equal to harmonic mean {Cauchy's principle} {Cauchy principle}.
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Date Modified: 2022.0225