If when measuring two quantitative variables on an individual, we find that increases in the first variable x correspond to decreases in the second variable y, we say that  A. there is a positive association between the two variables. b. there is a negative association between the two variables. c. there is no correlation between the two variables. d. there is a cause-and-effect relationship between the two variables.

MATLAB: An Introduction with Applications
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If when measuring two quantitative variables on an individual, we find that increases in the first variable x correspond to decreases in the second variable y, we say that 

A. there is a positive association between the two variables.

b. there is a negative association between the two variables.

c. there is no correlation between the two variables.

d. there is a cause-and-effect relationship between the two variables.

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