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Title: A third study with 2,000 subjects found an experimental group mean of 29.26 (SD = 2.5) and a control ... Post by: hbuedu on Mar 13, 2018 A third study with 2,000 subjects found an experimental group mean of 29.26 (SD = 2.5) and a control group mean of 29.26 (SD = 1.5). What is the average effect size of the three studies?
a. 1.09 c. 1.84 b. 1.66 d. None of these are true. Ques. 2 A study of a new reading training program achieved, with 100 subjects, the following results: experimental group mean = 30.25 (SD = 3.28) and control group mean = 25.14 (SD = 4.75). However, a second study with 541 subjects found experimental group mean = 28.81 (SD = 2.56) and control group mean = 26.62 (SD 2.01). a. The first study had a higher effect size. b. The second study had a higher effect size. c. Both studies had similar effect sizes. d. None of these are true. Ques. 3 The z-scores for X and Y variables are exactly the same except they have opposite signs. The coefficient of determination is a. 0.00. b. -1.00. c. +1.00. d. not possible to compute with this information. Title: A third study with 2,000 subjects found an experimental group mean of 29.26 (SD = 2.5) and a control ... Post by: x on Mar 13, 2018 Content hidden
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