Which of the following states collects a smaller percentage of their resident's income than Texas?

The heart of survey research is

A) statistical analysis. B) the careful selection of representative samples. C) a commitment to the democratic system. D) getting a quick public response to an issue.

A positive value for a correlation indicates

a. increases in one variable tend to be accompanied by increases in the second variable. b. increases in one variable tend to be accompanied by decreases in the second variable. c. a stronger relationship than if the correlation were negative. d. nothing; all correlation values are positive.