Which of the following geom_ functions are appropriate for adding a layer to a ggplot2 object to visualise the relationships between numeric variables?

Question

1. Which of the following geom_ functions are appropriate for adding a layer to a ggplot2 object to visualise the relationships between numeric variables? There may be more than one correct answer.

	geom_bar()
	geom_point()
	geom_histogram()
	geom_count()
	geom_scatter()
	geom_boxplot()

Answer 1

If you are looking to plot continuous variables on the x and y axes, then you would want to use geom_point(), which provides a basic scatter plot. Additional layers can be added to visualize the relationship between these variables, such as with geom_smooth(method = "lm") which displays a line of best fit onto the scatterplot.