I. When the sum of the residuals is greater than zero, the data set is nonlinear. II. A random pattern of residuals supports a linear model. III. A random pattern of residuals supports a non-linear model.
bull market definition. A market, especially a stock market, characterized by rising prices; the opposite of a bear market. We can always go back to worrying; we are still in a bull market for fear.
A mass market is a general population which can be targeted at wide for the sales and marketing of a product. To explain a mass market, it can simply be compared with a niche market. A niche market is one where a very small market segment exists. Example â Tractors are a niche market.