Building a handrail for your deck may seem like a simple task. In many cases it is -- until the time arrives to figure out how to get the balusters or spindles evenly spaced along the handrail. Evenly spaced spindles improve the symmetry of the rails and lend a professional look to the project. But finding the right measuring formula may give the average home handyman pause.
R-squared is a statistical measurement that determines the proportion of a security's return, or the return on a specific portfolio of securities, that can be explained by variations in the stock market, as measured by a benchmark index.
1 The R-squared value, denoted by R, is the square of the correlation. 2  It measures the proportion of variation in the dependent variable that can be attributed to the independent variable. 3  The R-squared value R is always between 0 and 1 inclusive. 4  Perfect positive linear association.