Covariance is a statistical measure of the extent that 2 variables move together relative to their respective mean (or average) values.
Correlation is a measure of the strength of linear association between two variables or more variables of interest. We can measure the degree and direction of their linear association using correlation analysis. Read this article to learn more!
Inflation refers to the general rising of prices for goods and services in the economy, due to an increase in the amount of money and/or credit available. When it occurs, the purchasing power of your dollar falls.