11. Correlation

Which of the following scatterplots best shows an outlier in only the $x$-direction?

Given the following table of values for variables $x$ and $y$: (1, 2), (2, 4), (3, 6), (4, 8), does the table show a proportional relationship between $x$ and $y$?

Given are five observations for two variables, which of the following statements about the scatterplot of the data is most likely to be true?

Given a scatterplot where the points trend upward from left to right, which describes the correlation shown in the scatterplot?

Which of the following best describes a scatterplot and its primary use in statistics?

Which type of display is most likely to reveal an association between variables $x$ and $y$?

Why is it important to report correlations together with scatter diagrams when analyzing the relationship between two quantitative variables?

Which of the following best describes the appearance of a scatterplot that shows a strong positive linear relationship between two variables?

Given a residual plot that shows a random scatter of points around the horizontal axis with no apparent pattern, which conclusion is most appropriate about the use of a linear model?