Final answer:
Correlation coefficient and regression analysis are two measurements that tell us how changes in one variable are associated with changes in a second variable.
Step-by-step explanation:
Two measurements that tell us how changes in one variable are associated with changes in a second variable are correlation coefficient and regression analysis.
The correlation coefficient is a statistic that indicates the strength and direction of the relationship between variables.
Regression analysis, on the other hand, is a more complex statistical technique used to determine the strength and direction of causality between variables.