harmean( number )
Returns the harmonic mean of the specified number(s), which is the number of terms divided by the sum of the terms' reciprocals.
Keyword  Type  Description 


Decimal Array 
Numbers over which to calculate the harmonic mean. 
Decimal
Use this function for the average of rates.
You can experiment with this function in the test box below.
Test Input
harmean(1,2,3)
returns 1.636364