Back to Interpreting Categorical and Quantitative Data — Problem 6 · Task Set 37

HSS.ID Tutor Intake - Data Displays, Statistics, Models, and Correlation

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Grade 9·14 problems·~18 min·Common Core Math - HS Statistics and Probability·domain·id

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Concepts

Two scatter plots are compared. Plot 1 has correlation coefficient
$r = 0.3$ ; Plot 2 has $r = -0.95$ . Which statement is correct?

Plot 1 shows the stronger association, because its $r$ is
positive.

Plot 2 shows the stronger linear association, because strength is
the magnitude of $r$ .

Plot 2 is weaker, because a negative $r$ is always weak.

They are equally strong, because $0.3$ and $-0.95$ are both
between $-1$ and $1$ .