You obtain pretest and posttest scores from a group of participants. Before conducting a t test for dependent means, you first combine the two sets of scores into one set of scores by figuring __________.

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The Answer of You obtain pretest and posttest scores from a group of participants. Before conducting a t test for dependent means, you first combine the two sets of scores into one set of scores by figuring __________.

You Obtain Pretest and Posttest Scores from a Group of Participants