#
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Help

Harmonic Mean

The harmonic mean of two numbers a and b is 2ab/(a + b).

Examples
a	b	Harmonic Mean
1	6	1.71
2	9	3.27
3	5	3.75
4	5	4.44
5	5	5.00
6	4	4.80

See also: Geometric Mean, Mean.

Subjects: Statistics