Basic scatter plot with ggplot2. However, it’s currently impossible to know which points represent what counties. ggplot’s geom_text() function adds labels to all the points: ma_graph + geom ...

See Figure 1 for an example of a scatter plot and regression line. A closely related method is Pearson’s correlation coefficient, which also uses a regression line through the data points on a scatter ...

In a linear regression plot, the straight line represents the best attempt to minimize the residual sum of squares between known or observed data points and the predicted data points.

The line of best fit is used to express a relationship in a scatter plot of different data points. It is an output of regression analysis and can be used as a prediction tool for indicators and ...