11. Correlation

Scatterplots & Intro to Correlation

Multiple Choice
In the context of scatterplots, what is the primary goal of correlation?
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Multiple Choice
Which scatterplot shows a negative correlation between $x$ and $y$ ?
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Multiple Choice
In a scatterplot, a negative correlation means which of the following?
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Multiple Choice
In the context of scatterplots and correlation, what does the statement "correlation does not imply causation" mean?
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Multiple Choice
Which of the following best describes a scatterplot and its primary use in statistics?
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Multiple Choice
In a scatterplot, a negative correlation indicates which overall pattern between variables $x$ and $y$ ?
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Multiple Choice
Which of the following scatterplots best represents a negative correlation between two variables?
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Multiple Choice
Which of the following scatterplots best illustrates a correlation that is affected by $n o n - l i n e a r i t y$ ?
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Multiple Choice
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?
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Multiple Choice
Four scatterplots (A–D) are shown. Which plot shows the strongest linear correlation (i.e., has the correlation coefficient $r$ with the greatest absolute value)?
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Multiple Choice
Which statement about correlation is false?
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Multiple Choice
Given a scatterplot where the points trend upward from left to right, what type of association is shown by the scatterplot?
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Multiple Choice
Which of the following best describes the scatterplot of a car's value compared to the age of the car?
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Multiple Choice
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
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Multiple Choice
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.
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