The evaluator should structure the evaluation using an appropriate research design.When utilizing an instrument to collect data,the evaluator may need to select the time and the individuals on whom observations will be made.For which research design is it best if the design is repeated by several researchers in separate situations?

Question

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In a time series design,a series of measurements are made over a period of time with an experimental variable introduced at some point in the sequence.It is best if the design is repeated by several researchers in separate situations.

The Evaluator Should Structure the Evaluation Using an Appropriate Research