Researchers estimate that by 2015, ____ percent of adults and ____ percent of children and adolescents in the United States will be overweight or obese

A researcher conducts an experiment to establish a relationship between a chess player's mental stability and his performance in a game. He finds that the two have a Pearson product-moment correlation coefficient value of +1.00. This means the two variables—mental stability and performance—have a _____ relationship.

Fill in the blank(s) with the appropriate word(s).

Which of the following correlation coefficients represents the WEAKEST relationship?

a) -.97 b) +.49 c) +.83 d) -.52