Which of the following sentences best describes mediation?

A. Mediation refers to a situation in which the relationship between a predictor variable and an outcome can be explained by their relationship to a third variable.
B. Mediation refers to the combined effect of two variables on an outcome.
C. Mediation refers to a situation in which the relationship between a predictor variable and an outcome is significant only when the mediator is included in the model.
D. Mediation refers to a situation in which the relationship between a predictor variable and an outcome is unaffected by their relationship to a third variable.


Answer: A

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All of the following describe purposes of the TIMSS except

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What will be an ideal response?

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a. making changes in mechanical errors. b. changing both surface and meaning details. c. what the writer does at the very end of the process to get ready for publication. d. what other children can do as they provide response to the child sharing his writing drafts.

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Indicate whether the statement is true or false

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