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Authority Personal Experience Deduction
NATURE OF OBSERVATION
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achievement analysis analysis of variance assigned assumptions behavior bibliography cards cause coefficient column consequences construct control group correlation cross-sectional study dependent variable descriptive determine deviation discussion educational effect employed entities error evidence examine example exists experiment explanation external validity factors facts Figure findings FORTRAN hypothesis Index index register indicate instruments interaction interpretation interval interval scale investigation knowledge Latin square level of measurement locate logical materials mean scores measure method null hypothesis observations obtain operational definitions ordinal scale period phenomena population predict present pretest problem procedures pupils questionnaire questions random reading records reference regression relationship reliability responses sample scale scientific scientific method scientists selected significant social specific standard standard deviation statement statistical subjects teacher techniques theory tion units validity weight