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%.
BREAKING DOWN 'Coefficient Of Variation-CV'. In the investing world, the coefficient of variation allows you to determine how much volatility (risk) you are assuming in comparison to the amount of return you can expect from your investment.In simple language, the lower the ratio of standard deviation to mean return, the better your risk-return tradeoff.t is calculated as follows: The coefficient of variation represents the ratio of the standard deviation to the mean, and it is a useful statistic for comparing the degree of variation from one data series to another, even if the means are drastically different from each other. Next Up.