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%.
To calculate the degrees of freedom for a correlation, you have to subtract 2 from the total number of pairs of observations. If we denote degrees of freedom by df, and the total number of pairs of observations by N, then: Degrees of freedom, df=N-2.For instance, if you observed height and weight in 100 subjects, you have 100 pairs of observations since each observation of height and weight constitutes one pair.ay you have before/after â¦ scores for 10 people. You have 20 scores, but the test is done on the differences, of which you have 10 and that means 9 df. You typically obtain df from n - 1, as you do in this case, you just need to be careful to think of this as the number of pairs and not scores.