Indicate whether by knowing someone’s score on the first variable, the relationship accounts for a large or small amount of the variance in the second variable.
(a) For children ages 1 to 6, using age to predict height;
(b) For ages 30 to 40, using age to predict the driving ability of adults;
(c) Using a students’ hours of studying to predict final exam grades;
(d) Using students’ hair color to predict final exam grades.