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The one-group pretest-posttest design may be symbolized as O1 X2 O2. In this design,a group of test units is measured ________.
Q2: Which of the following represents an example
Q4: Which of the following is not one
Q6: _ is the extent to which differences
Q6: A(n)_ is an unstructured,indirect form of questioning
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Q38: A primary method of observation using the
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Q99: O<sub>1 </sub>O<sub>2 </sub>O<sub>3 </sub>O<sub>4 </sub>O<sub>5 </sub>X O<sub>6