At 3 o'clock in the morning John has already slept for 4 hours. As long as his sleep continues, we can expect an increasing occurrence of:

What does r - squared represent?

a. It is the average standard deviation b. It is % of variance in Y that is related to X c. It represents difference d. It represents chance

Mental categories for classifying specific objects, people, and experiences are known as ________

a. evaluations b. images c. reflections d. concepts