Bivariate statistical measures

Bivariate statistical measures

1. Data analysis

   • to know how they relate to each other
     • It can be classified as
       • Unilateral causal dependence
       • Interdependence
       • Indirect dependence
       • Agreement
       • Causal covariance

2. Correlation

   • summarizes the degree of relationship between two variables
     • How one variable relates to the other
   • Numerically expresses both the strength and the direction of the linear correlation

3. Regression

   • Mathematical equation describing the relationship
     • It could be
       • Line or linear function
       • Second degree parabola
       • Exponential function
       • Potential function
   • Used to predict a future value
   • Regression equation

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