A correlation of +1 can be interpreted to suggest that both variables move perfectly ... Take a look at the graph below to see a graphical depiction of a regression equation. In this graph, ...

With a correlation that low, there will be some mean regression at work. Think of it this way. Seven door-to-door salesmen go out and sell as many vacuum cleaners as they can on a Sunday.

The Pearson coefficient is a mathematical correlation coefficient representing the relationship between two variables, denoted as X and Y. Pearson coefficients range from +1 to -1, with +1 ...