If anyone takes Geometry or has a geometry book, can you please tell me the geometric mean formula. I know it has something abou the square root but I am not sure.
2007-05-20 07:38:44 · 4 answers · asked by aaroncageman 1 in Science & Mathematics ➔ Mathematics
If you want to take the geometric mean of a set of n numbers (a1, a2... an), you take the nth root of their product:
M= (a1*a2*...*an)^(1/n)
So, if you want to take the geometric mean of 2 numbers, n=2 and you are simply taking the square root of their product:
M=sqrt(a1*a2)
Contrast this to the arithmetic mean:
M=(a1+...+an)/n
Hope this helps
2007-05-20 07:44:38 · answer #1 · answered by Yo 2 · 0⤊ 0⤋
Whatever your two numbers are, the geometric mean is the square root of their product.
x = â(ab)
As an example, the geometric mean of 12 and 3 is 6, because â (12Ã3) = â 36 = 6.
2007-05-20 07:45:07 · answer #2 · answered by Louise 5 · 1⤊ 0⤋
I took geometry last year, let's see if i remember...
Geometric sequence is a/b=b/c
Geometric mean the b, between a and c
plug in a and c and find out b
for example,a =4 and c=64
4/b=b/64
256=b^2
b=16
2007-05-20 07:43:37 · answer #3 · answered by samswebsite 4 · 0⤊ 0⤋
The 'geomettric mean' (call is g) between to calues (call them a and b) is given by
a/g = g/b or
g² = ab so
g = â(ab)
HTH
Doug
2007-05-20 07:43:11 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋