Cities is supported by. To establish our list of the worldâs most powerful city brands, we asked Saffron, a brand consultancy that prides itself on its expertise in urban branding, to update its 2008 study of European cities into an assessment of 57 major cities around the world.
INVARIABLE Dictionary entry overview: What does invariable mean? â¢ INVARIABLE (noun) The noun INVARIABLE has 1 sense: 1. a quantity that does not vary Familiarity information: INVARIABLE used as a noun is very rare. â¢ INVARIABLE (adjective) The adjective INVARIABLE has 1 sense: 1. not liable to or capable of change Familiarity information: INVARIABLE used as an adjective is very rare.
Covariance is a type of value used in statistics to describe the linear relationship between two variables. The higher the covariance between two variables, the more closely their values follow the same trends over a range of data points (in other words, the less the two variables' curves deviate from each other). In our example, we would find the average of our x values by adding the values in the x column in the table above and dividing by the number of values in the column. 2  Adding 1+3+2+5..., we get a total of 44. 3  Dividing this by 9, the number of x values, we get 44/9 = 4.89 as our x average.