Exact(3)
Nevertheless, in other settings, where group differences in proficiencies are smaller, the adjustments provided by the mixture PD models might lead to qualitatively different conclusions.
In addition, we examined whether accounting for group differences in PD affected the results of the group comparisons of students' proficiencies, and whether the mixture models envisaged differed in their estimates of group differences in proficiencies.
The models were extended to accommodate multiple groups, thereby making it possible to examine and test group differences in PD, and to adjust group differences in proficiencies for PD.
Similar(57)
Some gains in proficiency can be masked by temporary losses but will emerge later.
Only students in Charlotte, N.C., of the 10 urban districts studied, surpassed the national average in proficiency in reading and math.
"You drop them off at the beginning of the year, and on average, by the end of the year, your child lost ground in proficiency," Mr. Liebman said.
For the trombonist Robin Eubanks and the trumpeter Alex (Sasha) Sipiagin that meant improvisation in a heroic mode, steeped in proficiency and clarity.
It's been suggested that the benefits of caffeine, in terms of heightened focus, might be offset by a decrease in proficiency at more imaginative tasks.
But as the season winds down, Mr. Levine has turned even those concerts largely to operatic fare, in which this orchestra is unsurpassed in proficiency.
In Australian terms, "this may be found in proficiency in a regional language, an interest in cross-border law or simply a thirst to work with a team which is not limited to Australian borders," she said.
The exams were fundamentally different from those given in 2005, so the results cannot be compared with earlier tests to gauge changes in proficiency.
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