scatterplot

graph of 2 quantitative variables

bi-variate data

two-variable data

correlation

describes the relationship between

2 variables in a scatter plot

residual

difference between the observed and predicted y-values

causation

relationship in which the change in one variable results in a change in the value of the other variable

Regression

finds a model for bivariate data

Line of best fit

A linear model that comes closer

to all of the points in a scatterplot than any other line