11. Correlation

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

Which of the following correlation coefficients indicates the strongest linear relationship between two variables ($r$)?

Which of the following relationships would most likely have the weakest correlation?

Which of the following $r$-values represents the most moderate correlation?

Which of the following $r$-values represents the weakest correlation between two variables?

Which of the following best describes the $r$ (correlation coefficient) between the weight and price of a box of cereal, assuming that as the weight increases, the price also tends to increase?

Which of the following is a property of the linear correlation coefficient $r$?

Which of the following scatterplots best represents a negative linear relationship between $x$ and $y$?

Which of the following statements about the correlation coefficient is true?

Which of the following can be used to show a cause-and-effect relationship between two variables?

Which of the following tables shows a negative correlation between variables $X$ and $Y$?

Which of the following best describes all possible values that the correlation coefficient $r$ can take?

Which of the following is a characteristic of the correlation coefficient?

Suppose you are shown four scatterplots, each with a calculated correlation coefficient. Which of the following correlation coefficients indicates the strongest linear relationship between the two variables?

Which of the following tables shows no correlation between variables $X$ and $Y$?