Question

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

Answer 1

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)