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City and Regional Planning QUESTION #4948
Question 1
In statistical analysis, what does $r^2$ (R-squared) measure?
  • Correlation coefficient
  • Variance explained by the model✔️
  • Standard deviation
  • Mean absolute error
Correct Answer Explanation
$r^2$ (R-squared) measures the proportion of variance in the dependent variable that is explained by the independent variable(s), ranging from 0 to 1, indicating model fit quality.