Sentences with phrase «systematic differences among»

First, doesn't the model uncertainty include both model noise (i.e., weather fluctuations) and systematic differences among the models?

As a general strategy, then, we developed empirically driven indices of effectiveness for both schools and teachers, grouped the schools or teachers into categories of effectiveness, and then examined the systematic differences among schools or teachers on other sets of variables.

Not exact matches

«Rather than producing a systematic definition of «vocation,» we decided to draw upon our diverse perspectives in a way that did not smooth out the differences among them.»

While there is considerable anecdotal evidence that principals are important — including various movies about the charismatic principal or the bumbling bureaucrat, there has been very little systematic evidence about the magnitude of differences among principals or about their impact on student learning.

Many of his studies took him into controversial territory, including his investigation of whether incentives increase academic achievement (in most cases, no), and his investigation with Steven Levitt of whether there are systematic racial differences in mental ability among young children (no, when they're under the age of 1; yes, as they get older, hinting at the importance of environmental differences).

A series of robustness and placebo tests indicate a systematic influence of teacher skills as distinct from overall differences among countries in the level of cognitive skills.

Analyzing differences in effect sizes reduces systematic biases and emphasizes direct comparisons between the disciplinary tactics that parents have to select among.