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many elementary schools have implemented a daily sustained silent reading period during which students faculty and
1 for the preceding situation discuss the advantages and disadvantages of using a quasi-experimental design in contrast
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1 what is meant by the problem of direction of cause and effect and the third-variable problem2 how do direct
you observe that classmates who get good grades tend to sit toward the front of the classroom and those who receive
identify the independent and dependent variables in the following descriptions of experimentsa students watched a
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1 what is meant by the reliability of a measure distinguish between true score and measurement error2 describe the
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1 distinguish between simple random stratified random and cluster sampling2 why dont researchers who want to test
suppose you want to know how many books in a bookstore have only male authors only female authors or both male and
1 what is confounding of variables2 what is meant by the internal validity of an experiment3 how do the two true
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the procedure used to obtain your sample ie random or nonrandom sampling is not the same as the procedure for assigning