Abating Stereotypical Attitudes: Views on Career Paths of an Asian American Comedian

An Asian American comedian, William Mar, provides an insightful commentary about his career choice. He believes that the comedy stage is a useful position to comment on stereotypes inherent to the American culture. Comedians must challenge the audience to think about the joke not only as amusement, but to examine the other implications involved.     

Constructing estimators of a mean vector through orthogonal reparametrization and differential equations

The simultaneous estimation of a mean vector is explored by reparametrizing it into its direction and norm components. A type of Pythagorean relation is employed to construct an estimate of the norm component, which results in solving an ordinary amerenuai equation, me james-Diem estimator is snown to be optimum in a class of estimators derived from general solutions of the ordinary differential equation. A new Stein-type estimator in the case of the inverse Gaussian distribution is constructed.     

Ratio tests of a unit root

Based on the maximal invariant principle, we derive two ratio tests (locally best invariant test and point optimal test) for a unit root and compare them with previously proposed ratio tests. We also show that our ratio tests tend to have better powers than the Dickey-Fuller test and the modified Dickey-Fuller test.