Final answer:
4) scatterplot
A graph utilized to show the relationship pattern between two variables is called a scatterplot, which is distinct from other charts like pie graphs, histograms, or diagrams.
Step-by-step explanation:
A graph that can be used to represent the pattern of relationship between scores from two variables is called a scatterplot. This type of graph displays individual dots representing data points based on two quantitative variables, where one variable is on the horizontal axis, and the other is on the vertical axis. Scatterplots are particularly useful for identifying trends, relationships, or possible correlations between two different sets of data. Unlike a pie graph, which represents portions of a whole, or a histogram which is used for frequency distribution of a single variable, or a diagram which can depict a broad range of relationships or processes, a scatterplot specifically illustrates how one variable changes in relation to another.