A __________ enables researchers to decide whether the effects of an independent variable are reliable across studies.

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A meta-analysis is a statistical procedure that combines the results of multiple studies on a particular topic to evaluate their overall effect size. It can provide insight into the consistency and reliability of findings across different studies and help researchers identify patterns or discrepancies in the results. Peer review is a process of evaluation by other experts in the field, but it is not directly related to assessing the reliability of independent variables. Reliability coefficient and validity index are measures of the consistency and accuracy of data collected within a single study, rather than across different studies.

A __________ Enables Researchers to Decide Whether the Effects of an Independent