"No one is harder on a talented person than the person themselves" - Linda Wilkinson ; "Trust your guts and don't follow the herd" ; "Validate direction not destination" ;

March 22, 2016

Day #10 Data Science Learning - Correlations

  • If you have correlation you can use machine learning to predict variables
  • Mutual relationship connection between two or more things
  • Correlation shows inter dependence between two variables
  • Measure - How much one changes when other also changes ?
  • Popularly Used - Pearson Correlation coefficient
  • Value ranges from -1 to +1
  • Negative correlation (Closer to -1) - One value goes up other goes down
  • Closer to Zero (No Correlation)
  • Closer to 1 (Positive Correlation)
Correlation - Relationship between two values
Causation - Reason for change in value (Cholesterol vs weight, Dress Size Vs Cholesterol). Identify if it is incidental.

Happy Learning!!!

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