Which of the following two statements is true regarding correlation? Correlation is a qualitative measure of the strength of a linear association between two variables. Correlation is a quantitative measure of the form between two variables, as seen on a scatterplot. Correlation is a quantitative measure of the strength of a linear association between two variables. Correlation can be used to determine the direction of the relationship between two variables. Correlation can only be positive. Correlation can only be negative. 2 items need to be selected.