trafność wewnętrzna (PRECYZJA badania) |
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wysoka (+) |
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eksperyment laboratoryjny |
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eksperyment terenowy |
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quasi- eksperyment |
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ex post facto |
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obserwacja
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niska (-) wysoka (+) |
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trafność zewnętrzna (zakres wniosków) |
© Jerzy Brzeziński (2008). Wykłady z metodologii ... Blok 2