HP 48gII - Manual (Page 271)

Page 8-16
3. Divide the result above by n = 10:
4. Apply the INV() function to the latest result:
Thus, the harmonic mean of list S is s
h
= 1.6348…
Geometric mean of a list
The geometric mean of a sample is defined as
n
n
n
n
k
k g
x x x x x L
2 1
1
⋅ = =
∏
=
To find the geometric mean of the list stored in S, we can use the
following procedure:
1. Apply
function ΠLIST() to list S:
2. Apply function XROOT(x,y), i.e., keystrokes ‚», to the result in
1:
Thus, the geometric mean of list S is s
g
= 1.003203…