The correct answer is C. 2D Graph.
A scatterplot is a type of data visualization that shows the relationship between two variables. It is created by plotting the values of the two variables on a two-dimensional coordinate system. The 5 number summary is a set of five numbers that summarizes a data set: the minimum, first quartile, median, third quartile, and maximum.
A 2D graph is a type of data visualization that shows the relationship between two variables. It is created by plotting the values of the two variables on a two-dimensional coordinate system. However, a 2D graph is not a type of statistical summary. It is a way of visualizing data, but it does not provide any information about the distribution of the data or the relationship between the variables.
Therefore, the odd man out is C. 2D Graph.