11. Correlation

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

Which of the following scatterplots best represents a negative correlation between two variables?

Which of the following scatterplots best illustrates a correlation that is affected by $non-linearity$?

For the scatter diagram shown, which of the following best describes the relationship between the two variables if the points form a pattern that rises from left to right?

Given a scatterplot where the points trend upward from left to right, what type of association is shown by the scatterplot?

Which of the following best describes the scatterplot of a car's value compared to the age of the car?

Suppose a scatterplot shows a strong positive linear relationship between hours studied and exam scores for a group of students; the best inference that can be made based on the graph is that

If a scatterplot shows no association between two variables, can reliable predictions be made about one variable based on the other? Choose the best answer.

Suppose a scatterplot shows a strong positive linear relationship between variables $x$ and $y$. Which statement is supported by information presented in the graph?

Given a scatterplot of $\mathrm{price}$ versus $\mathrm{mileage}$ for $20$ used sedans, what type of correlation would you most likely expect to observe between $\mathrm{price}$ and $\mathrm{mileage}$?

When preparing a scatterplot to examine the relationship between two quantitative variables, which variable is typically placed on the horizontal ($x$) axis?

Which term refers to a pictorial representation of a given set of data involving $2$ variables?

$$Which of the following scatterplots shows the weakest positive linear association between two variables?$$

Suppose a scatterplot displays a strong, positive linear relationship between two variables. Which of the following statements is best supported by the data shown in the graph?

Scatterplots are used to determine which of the following about two quantitative variables?