During a study, scientists noted that people with more self-esteem tend to not be depressed and vice versa. Which of the following types of relationships did they observe?

Question

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Correlation is a statistical measure that indicates the extent to which two or more variables change together. A positive correlation indicates that the variables are increasing or decreasing together (in parallel). A negative correlation indicates that as one variable increases the other decreases.
Spontaneous events are based on some conditions becoming true, but not based on any timing criterion.
To determine the cause of something, ask why it happened. To determine the effect of a cause, ask what happened. Cause and effect relationships show a clear connection between the "what happened" and the "why it happened."
In statistics, a random effects model is a statistical model where the model parameters are random variables.

During a Study, Scientists Noted That People with More Self-Esteem