1. When no linear relationship exists between variable X and variable Y, r equals which of the following?
a) −∞-∞
b) -1
c) 0
d) +1
e) +∞+∞
2. Pearson’s r correlation measures the relationship between which of the following?
a) Two continuous variables
b) Two categorical variables
c) One continuous and one categorical variable
Solution :
1)
When no linear relationship exists between variable X and variable Y, r equals 0
2)
Pearson’s r correlation measures the relationship between One continuous and one categorical variable
c)
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