Question
1...a. A sample of difference scores has dfof 12,mean of M D = 4 with a standard deviation= 16.If effect size is measured using Cohen's
1...a. A sample of difference scores has dfof 12,mean of MD= 4 with a standard deviation= 16.If effect size is measured using Cohen's d, what is the value of d?
a.d = .25
b.d = 1
c.d = .33
d..001
1b. A related measures study with an n of 20 produces a MDof 4 and a variance of 49.For this study, Cohen's d = ____.
a.Cohen's d = 4/7
b.Cohen's d = 4/49
c.Cohen's d = 2/7
d.Cohen's d = 2/20
c. An independent-measures study has one sample with n = 11 and a second sample with n = 14 to compare two experimental treatments.What is the df value for the t statistic for this study?
a.23
b.25
c.24
d.20
d. A repeated-measures study and an independent-measures study both produce a t statistic with df = 20.The independentmeasures study used more subjects than the repeated measures study.
1.True
2.False
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