The Louvre Museum as seen through the Louvre Pyramid glass in Paris, France. Smithsonian Institution, Washington, D.C. The Smithsonian is the worldâs largest research and museum complex, with 19 museums and galleries, the National Zoological Park, and various research stations.
Geometric Mean. The Geometric Mean is a special type of average where we multiply the numbers together and then take a square root (for two numbers), cube root (for three numbers) etc. First we multiply them: 2 Ã 18 = 36. Then (as there are two numbers) take the square root: â36 = 6.
Lesson Summary. To review, the geometric mean is the nth root when you multiply n numbers together. It is used to calculate the average rate of growth when the growth is determined by multiplication as in the case of annual percentage growth of a bank account. The formula for geometric mean is found from its definition. You first multiply your numbers together and then you take the nth root where n is the number of numbers you multiplied together.