What is indicated by a negative correlation?

A negative correlation indicates that as one measure increases, the other measure decreases. This means that there is an inverse relationship between the two variables being examined. When you plot the data on a graph, you would observe a downward trend; as the values of one variable rise, the values of the other fall. Understanding negative correlation is crucial in various fields, including biomedical engineering, where it can reflect how different biological or mechanical systems interact negatively.

In terms of the other options: both measures increasing together reflects a positive correlation; a situation where there is no relationship between the measures signifies zero correlation; and both measures decreasing together also indicates a positive correlation. None of these accurately describe the scenario presented by a negative correlation.