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On this page

  • CorrelationAnalysis
    • Purpose
    • Test Mechanism
    • Signs of High Risk
    • Strengths
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  1. Test descriptions
  2. Stats
  3. CorrelationAnalysis

CorrelationAnalysis

Performs comprehensive correlation analysis with significance testing for numerical features.

Purpose

This test conducts detailed correlation analysis between numerical features, including correlation coefficients, significance testing, and identification of significant relationships. It helps identify multicollinearity, feature relationships, and potential redundancies in the dataset.

Test Mechanism

The test computes correlation coefficients using the specified method and performs statistical significance testing for each correlation pair. It provides: - Correlation matrix with significance indicators - List of significant correlations above threshold - Summary statistics about correlation patterns - Identification of highly correlated feature pairs

Signs of High Risk

  • Very high correlations (>0.9) indicating potential multicollinearity
  • Many significant correlations suggesting complex feature interactions
  • Features with no significant correlations to others (potential isolation)
  • Unexpected correlation patterns contradicting domain knowledge

Strengths

  • Provides statistical significance testing for correlations
  • Supports multiple correlation methods (Pearson, Spearman, Kendall)
  • Identifies potentially problematic high correlations
  • Filters results by minimum correlation threshold
  • Comprehensive summary of correlation patterns

Limitations

  • Limited to numerical features only
  • Cannot detect non-linear relationships (except with Spearman)
  • Significance testing assumes certain distributional properties
  • Correlation does not imply causation
Specificity
DescriptiveStats
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