A time series before-and-after quasi-experimental design makes multiple observations in both pretest and posttest periods.
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Q49: A fixed sample panel design is the
Q50: Maturation in experiments occurs when changes in
Q51: This problem occurs when the groups become
Q52: This term refers to when comparison group
Q53: Changes in outcome scores during experiments that
Q55: Although cross-population generalizability is difficult to achieve
Q56: Before-and-after designs have no control or comparison
Q57: True experiments require random assignment of subjects
Q58: True experiments can have only two comparison
Q59: Field experiments allow greater control over conditions
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