Bivariate statistical measures regression and correlation

Bivariate statistical measures regression and correlation

1. Regression

   • statistical method developed to investigate those relationships
   • Regression analysis
     • Describe the relationship existing between two variables
       • Can be
         • regression simple linear
         • Regression multiple
         • Regression Logistics
           • Represented in a Dispersion diagram
       • Could be linear parabolic exponential
     • Allows the prediction of a variable
       • Called slope

2. Correlation

   • Correlation analysis
     • Relationship between the two analyzes
       • Unilateral causal dependence
       • Interdependence
       • indirect dependency
       • Agreement
       • Casual covariation
     • Describes the degree of force, known as coefficient of pearson correlation
       • Coefficient of correlation
         • It is a measure of interdependence of two variables random
     • Allows you to measure the force of association between two variables
     • Indicates the strength and direction of a linear relationship and proportionality between two statistical variables

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