Investigators are studying registered students at the University of California. The students fill out questionnaires giving their year of birth, age (in years), age of mother, and so forth. Fill in the blanks, using the options given below, and explain briefly.

(a) The correlation between student's age and year of birth is ______.

(b) The correlation between student's age and mother's age is ______.

-1 nearly -1 somewhat negative 0 somewhat positive nearly 1 1 P-698