Compute the antilog of the mean. The quantity GSD exp s is defined to be the geometric standard deviation. The geometric mean for a series of numbers is calculated by taking the product of these numbers and raising it to the inverse of the length of the series.
Whereas the arithmetic mean is calculated by summing a series of data points and then dividing that sum by the number of data points Equation 1 the geometric mean multipliesa series of data points and then uses the nnumber of data points to find the nth rootof that product Equation 2.
It is estimated from a sample by the quantity exp m where m is the arithmetic mean of the log-transformed data. To calculate the geometric mean we take their product instead. To do this we add one to each number to. An online statistical geometric mean calculator to find the geometric mean value of the given numbers or statistical data when all the quantities have the same value.