What best describes a scatter plot?

A scatter plot is primarily designed to illustrate the relationship between two variables by plotting their values on a two-dimensional graph. Each point on the plot represents an observation with coordinates corresponding to the values of the two variables being analyzed. This visual format enables the viewer to quickly interpret correlations, trends, and potential outliers within the data set.

In contrast, the other options describe different types of visual representations. For instance, a chart showing percentage data typically refers to pie charts or bar graphs that display proportions or ratios but does not convey relationships between variables. An organizational structure layout outlines the hierarchy and reporting structure of a company, which has no relevance to how variables interact. A visual representation of market share generally illustrates how different companies or products compare within a market segment, focusing on portions of a whole rather than on the relationship between variables. Thus, the selection of the description identifying a scatter plot as a graph that displays relationships between variables is accurate and aligns with its primary function.