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17. Which of the following is true of a meta-analysis? a. A meta-analysis is where a researcher actively manipulates the dependent variable. b. A meta-analysis applies random assignment to a field study setting. c. A meta-analysis is completed to determine if a variable can be targeted. d. A meta-analysis quantifies the results of a group of studies.
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Meta analysis is the process where the scientists want to know the answer to the question they carry out many studies related to that and then finding the answer from the results obtained by the all studies....

Hence this option (d) is correct..!!

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