11. Correlation

Which of the following statements is true of correlation analysis?

Given the following paired data: $(1,2)$, $(2,4)$, $(3,6)$, $(4,8)$, what is the value of the Pearson correlation coefficient $r$ for this data set?

Given the following paired data: $(1,2)$, $(2,4)$, $(3,6)$, $(4,8)$, what is the value of the correlation coefficient between $x$ and $y$?

Which of the following tests gives the same result as a test of the regression line slope in simple linear regression?

Given the following bivariate dataset: $(1,2)$, $(2,3)$, $(3,5)$, $(4,4)$, $(5,6)$, what is the coefficient of determination $R^2$ for the best-fit linear model?

Which of the following values of the correlation coefficient $r$ indicates the strongest correlation?

Which of the following best completes the statement: $\mathrm{correlation}$ means that ________.

Given the following paired data: $(1,2)$, $(2,4)$, $(3,6)$, $(4,8)$, what is the value of the correlation coefficient $r$ for this data set?

Which of the following scatterplots best represents a correlation coefficient of $0.7$?

Given four scatterplots labeled $A$, $B$, $C$, and $D$, each showing a different relationship between two variables, which plot most likely represents the strongest linear correlation (either positive or negative) between the variables?

Which of the following scatterplots would have a correlation coefficient closest to $r=1$?

Given a scatterplot showing a strong negative linear relationship between two variables, which is most likely the correlation coefficient for the set of data shown?

Which of the following scatterplots best represents a situation where the correlation coefficient $r$ is approximately zero?

Which value of the correlation coefficient $r$ indicates a stronger correlation than $0.40$?

If the correlation coefficient $r$ equals $0.65$, which of the following best describes the relationship between the two variables?