Javascript - Trend Calculator

This script calculates the trend from pairs of data. The trend can be used for prediction. The calculation of the trend is based on Least Square Linear Regression Step One: Input Data    Select Sample Data B2C Market/Year (in Billion Dollars) Income/Age Dependent Variable Independent Variable   Step Two: What to Predict Independent Variable   Step Three: Predict Results Dependent Variable Trend Equation:     Related Topics Ecommerce Web Design - Site Navigation and Search Engine Ranking Web Design Languages Javascript Code Example -Interactivity for Web Site Design Cascading Style Sheet - Code Example Images on web sites: when should they be used?