__________ involves changes in the measuring instrument from the beginning or first period of evaluation to the second,later,or final evaluation.
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Q41: _ are any variables other than X
Q42: Interrupted time-series designs can then be defined
Q43: _ is a combination of errors introduced
Q44: Discuss the three general types of experimental
Q45: _ is the tendency of groups that
Q47: _ is the loss of subjects over
Q48: Discuss the three essential steps in resolving
Q49: Time-series designs measurement of a single variable
Q50: _ refers to biological or psychological changes
Q51: The three essential steps in resolving the
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