birdwatcher (birdwatcher) wrote,

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Факторный анализ понравился

Ученые доказали, что чартерные школы не лучше профсоюзных. А именно: Pound for pound, charters should do better than typical neighborhood schools because parents, who have to go to special trouble to enroll their children, presumably are more invested in their kids' performance, Mr. Orfield suggests. However, "after controlling for the mix of students and challenges faced by individual schools, Chicago's charter schools actually underperform their traditional counterparts in most measurable ways."
А если контролировать богатство, то я не отличаюсь от Уоррена Баффета!

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