Bivariate statistical measures

Bivariate statistical measures

1. Regression

   • Is
     • The analysis the relationship
       • Two or more variables continue ‎
     • Statistical technique used to derive
       • An equation that relates
         • A criterion variable with one or more of prediction
     • Study
       • The strength of the association
   • Issues
     • inhomogeneous variance
     • Nonlinear relationship
     • Correlated errors

2. Correlation

   • Is
     • Two Variable Analysis quantitative
       • It takes into account the dependent variables and independent
       • It is represented by a Dispersion diagram
       • The coordinates on the Cartesian axes are taken consider
   • Mutual relationship
     • Measures and indicates the degree and the values ​​of a variable
       • When interacting with another
   • Positive linear correlation
     • Has a median value
       • Why not all points are included in the line

3. Allow

   • The joint analysis of two features
     • Of the individuals of a population
       • In order to detect possible relationships between them

4. It is evidenced

   • Positive correlation and negative correlation
   • Simple linear correlation
   • Scatterplots
   • Regression
   • Simple regression
   • Coefficient of determination R2