Ensign /ËÉnsÉn/ late 14c., via Scottish, from Old French enseigne (12c.) mark, symbol, signal; flag, standard, pennant, from Latin insignia (plural) is a junior rank of a commissioned officer in the armed forces of some countries, normally in the infantry or navy.he Polish Army equivalent of ensign is  chorÄÅ¼y  (the Polish for  ensign  or flag being  chorÄgiew ). In Poland ensign is not an officer rank-it is NCO-equivalent. Before the 2007 reform chorÄÅ¼y formed a separate corps above the NCOs.
How to Find a Coefficient of Variation: Overview. Use the following formula to calculate the CV by hand for a population or a sample. Ï is the standard deviation for a population, which is the same as âsâ for the sample. Î¼ is the mean for the population, which is the same as XBar in the sample. In other words, to find the coefficient of variation, divide the standard deviation by the mean and multiply by 100%.
Meaning and definition of Coefficient of Variation. The coefficient of variation (CV) refers to a statistical measure of the distribution of data points in a data series around the mean. It represents the ratio of the standard deviation to the mean.alculating the coefficient of variation. The main steps involved in computation of coefficient of variation are: 1. Compute the sample mean, using the formula Î¼ = 'x i / n, where n indicates the number of data point x i in the sample, and the total is over all values of i. The term i is read as a subscript of x. 2.