The value of a r-squared is reported by a researcher to be r2=0.7. Which of the following statements
is correct?
a. The y-variable explains 70% of the variability in the y-variable.
b. The x-variable explains 70% of the variability in the y-variable.
c. The y-variable explains 50% of the variability in the x-variable
d. The x-variable explains 50% of the variability in the y-variable