A scatter plot is the perfect type of visualization when we want to explore the relationship between two variables. All observations included in the scatter plot have their X and Y-axis coordinates and one can easily notice if there is a relationship between the variable along the X axis and the variable along the Y axis. Every observation, which is part of the scatter plot needs to have manifestations for both variables. For example, if the two variables are year of construction of real estate and size of real estate, we must have year of construction and size data for every property included in our scatter plot.
Some other related topics you might be interested to explore are Bubble Chart, Line Chart, Waterfall Chart, and Bar Chart.
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