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.
At the same time, because the market is determined by investors' attitudes, these terms also denote how investors feel about the market and the ensuing trend. Simply put, a bull market refers to a market that is on the rise. It is typified by a sustained increase in market share prices. In such times, investors have faith that the uptrend will continue in the long term. Typically, the country's economy is strong and employment levels are high.