which is statement about R2 is not true? a. it is a measure of magnitude but not
ID: 3265889 • Letter: W
Question
which is statement about R2 is not true?
a. it is a measure of magnitude but not direction of the relationship in simple regression
b. it is sometimes called the coefficient of determination
c. its value indicates the percentage of variation of Y explained by all predictors as a set
d. values can range from -1.00 to +1.00
2. If one nominal level variable had four categories, how many dummy variables would be used to represent it as an independent variable in a regression analysis
a. 1
b. 4
c. 3
d. 2
Explanation / Answer
The value of R-sqaure always ranges from 0 to 1 (or in percentage 0 to 100%).
Answer: d
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2)
Since nominal level variable has 4 categories so number of dummy variables needed is 4-1 = 3
Answer: c = 3
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