It is customary to talk about the regression of Y on X, so that if we were predicting GPA from SAT we would talk about the regression of GPA on SAT. Scores on a dependent variable can be thought of as the sum of two parts: (1) a linear function of an independent variable, and (2) random error.
Learn more about this article. The German wasp, Vespula germanica, is a vespid wasp native to Europe, Northern Africa and temperate Asia, that have recently invaded much of the new world (North America and South America), Australia and New Zealand, where they pose a significant pest to indigenous fauna.espula germanica originated in Europe, Asia and North Africa and can now be found in sections of almost every continent. V. germanica has established populations in North America, South America, South Africa, New Zealand and Australia.
Black piedra and white piedra. Piedra, meaning stone in Spanish, is an asymptomatic fungal infection of the hair shaft, resulting in the formation of nodules of different hardness on the infected hair.hite and black piedra should be distinguished from each other. It can be noted that black piedra as compared to white piedra, presents a harder nodule that adheres to the hair shaft. Piedra can often be confused with pediculosis or lice infestation.