The statistical index
 |
where 
is the price per unit in period 
, 
is the quantity produced in period 
, and 
the value of the 
units, and subscripts 0 indicate the reference year.
Harmonic Mean Index
See also
IndexExplore with Wolfram|Alpha
References
Kenney, J. F. and Keeping, E. S. Mathematics of Statistics, Pt. 1, 3rd ed. Princeton, NJ: Van Nostrand, p. 69, 1962.Referenced on Wolfram|Alpha
Harmonic Mean IndexCite this as:
Weisstein, Eric W. "Harmonic Mean Index." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HarmonicMeanIndex.html