A researcher conducts a related measures T test and gets a value of MD = 4, with a sample size of n=11 and a T value of -3. If the researcher measures effect size using the percentage of variance accounted for, what value will be obtained for r2?
a. 9/20
b. 9/19
c. -9/19
d. it is not possible to have a negative value for T
Answer :
Given data is :
n = 11
t value = -3
degree of freedom df = n - 1 = 11 - 1 = 10
Here we need to find the
:





Option b is correct
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