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Title: A sample of difference scores has a mean of MD = 5 with a variance of s2 = 100 . If effect size is ... Post by: evaaaaa on Mar 19, 2018 A sample of difference scores has a mean of MD = 5 with a variance of s2 = 100 . If effect size is measured using Cohen's d, what is the value of d?
a. 5/10 b. 5/100 c. 25/100 d. Cannot determine without knowing the sample size Question 2 If a repeated-measures study shows a significant difference between two treatments with = .01, then what can you conclude about measures of effect size? a. The value of Cohen's d is large. b. The percentage of variance explained (r2) is large. c. Both Cohen's d and r2are large. d. A significant effect does not necessarily mean that the effect size will be large. Question 3 A repeated-measures study comparing two treatments with a sample of n = 4 participants produces MD = 3 with SS = 48 for the set of difference scores. What is the repeated-measures t statistic for these data? a. 3/3 = 1.73 c. 3/4 = 0.75 b. 3/2 = 1.50 d. 3/16 = 0.19 Title: A sample of difference scores has a mean of MD = 5 with a variance of s2 = 100 . If effect size is ... Post by: Shathena on Mar 19, 2018 A D B |