The scatter diagram is a graphical tool that helps identify the possible relationship between two variables. Represents the relationship between two variables graphically, which makes it easier to visualize and interpret the data. is a type of mathematical diagram that uses the Cartesian coordinates to show the values of two variables for a set of data.
The dispersion diagram allows to analyze if there is any kind of relationship between two variables. For example, it can happen that two variables are related so that increasing the value of one increases the value of the other. In this case we would talk about the existence of a positive correlation. It could also happen that when one occurs in one direction, the other derives in the opposite direction; for example, by increasing the value of the variable x, reduce that of the variable y. Then, there would be a negative correlation. If the values of both variables are revealed independent of each other, it would be affirmed that there is no correlation.
One of the most powerful aspects of a scatter plot, however, is its ability to show the non-linear relationships between the variables. Furthermore, if the data is represented by a simple relationship mixing model, these relationships are visually evident as overlapping patterns.
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