11. Correlation

Scatterplots & Intro to Correlation

Multiple Choice
When comparing the boxplots of two groups, which of the following should be done?
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Multiple Choice
In the context of scatterplots and correlation, what is a spurious correlation?
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Multiple Choice
Given several scatterplots, which of the following statements about the calculated correlation coefficient $r$ is correct?
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Multiple Choice
Which type of visualization is most appropriate for evaluating the relationship between two quantitative variables?
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Multiple Choice
In the context of scatterplots and correlation, which statement best describes how correlation and causation differ?
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Multiple Choice
In a scatterplot, which description best represents a positive correlation between $x$ and $y$ ?
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Multiple Choice
In a scatterplot, what does a negative correlation between variables $x$ and $y$ mean?
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Multiple Choice
In a psychology study, two variables show a negative correlation. What does this mean?
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Multiple Choice
Which of the following scatterplots best shows an outlier in only the $x$ -direction?
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Multiple Choice
In the context of scatterplots and correlation, which statement is correct?
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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 $y$ ?
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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?
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Multiple Choice
Given a scatterplot where the points trend upward from left to right, which describes the correlation shown in the scatterplot?
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Multiple Choice
Which of the following scenarios is an example of negative correlation (a downward trend in a scatterplot)?
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Multiple Choice
Which of the following descriptions best represents a strong negative correlation in a scatterplot?
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