Proizvod vam ne odgovara? Nema veze! Možete nam vratiti unutar 30 dana
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30 dana za povrat kupljenih proizvoda
A changing climate for educational research; sampling - the basis for all research; collecting secondary data - the idle researcher; simple analysis - index wars and other battles; surveying the field - questionnaire design; simple non-parametric statistics - minding your table manners; experimental approaches - a return to the gold standard; elementary parametric statistics - what do they signify?; progress via regression - introducing correlations.