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.
What is a 'Gray Market' A gray market is an unofficial market where securities are traded. Gray (or âgreyâ) market trading generally occurs when a stock that has been suspended trades off-market, or when new securities are bought and sold before official trading begins. The gray market enables the issuer and underwriters to gauge demand for a new offering because it is a âwhen issuedâ market; i.e., it trades securities that will be offered in the very near future.