But, if you are serious about learning Italian - and even before you buy or subscribe to any expensive courses (except, obviously, GamesforLanguage.com's Italian Story, which is FREE!) - you may want to learn more about Benny's approach by clicking on his explanation of Why Italian is easy!.
Coefficient of thermal expansion. The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. Specifically, it measures the fractional change in size per degree change in temperature at a constant pressure. Several types of coefficients have been developed: volumetric, area, and linear.
Why correlation coefficient is so important and why we should use it in our analysis? We live in a globalized world and financial markets are generally integrated - none of them moves on its own, but rather they move together, or in an inverse fashion (with turning points taking place at the same time).