11. Correlation

Scatterplots & Intro to Correlation

Multiple Choice
Which type of visualization is most appropriate for evaluating the relationship between two quantitative variables?
Multiple Choice
In the context of scatterplots and correlation, which statement best describes how correlation and causation differ?
Multiple Choice
In a scatterplot, which description best represents a positive correlation between $x$ and $y$ ?
Multiple Choice
In a scatterplot, what does a negative correlation between variables $x$ and $y$ mean?
Multiple Choice
In a psychology study, two variables show a negative correlation. What does this mean?
Multiple Choice
Which of the following scatterplots best shows an outlier in only the $x$ -direction?
Multiple Choice
In the context of scatterplots and correlation, which statement is correct?
Multiple Choice
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 $y$ ?
Multiple Choice
Given are five observations for two variables, which of the following statements about the scatterplot of the data is most likely to be true?
Multiple Choice
Given a scatterplot where the points trend upward from left to right, which describes the correlation shown in the scatterplot?
Multiple Choice
Which of the following scenarios is an example of negative correlation (a downward trend in a scatterplot)?
Multiple Choice
Which of the following descriptions best represents a strong negative correlation in a scatterplot?
Multiple Choice
Which of the following best describes a scatterplot and its primary use in statistics?
Multiple Choice
In introductory psychology statistics, what best describes a negative correlation between two variables when viewed in a scatterplot?
Multiple Choice
Which type of display is most likely to reveal an association between variables $x$ and $y$ ?