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.
Then take the third root (cube root) because there are 3 numbers. Naturally, the geometric mean can get very complicated. Here's a mathematical definition of the geometric mean: Remember that the capital PI symbol means to multiply a series of numbers. That definition says to multiply k numbers and then take the kth root. One thing you should know is that the geometric mean only works with positive numbers.