DESCRIPTIC STATISTICS

DESCRIPTIC STATISTICS

1. Regression

   • regression multiple
     • linear multip regression
       • For a variable interval of ratio. To analyze the relationship between two or more variable.
   • regression simple
     • linear regression
       • To explain the relación relationship between the response variable (dependent) and a single explanatory variable X (independent)

2. Bivariate measure of regression and correlation

   • Dispersion diagram it´s a diagram mathematician with cartesian coordinates to prove the variables for a set of data
     • Horizontal axis X vertical axis Y
   • Correlation
     • To determine changes in the influencing variable
       • Positive variable direct correlation
         • increases one of the variables by increasing the others
           • correlation coefficient
       • Negative variable inverse correlation
         • one of the variables increases the other decreases
       • Nonlinear variable null correlation
         • There is no dependecy of any kind between variables
           • Coefficient of determination

3. Probabilistic measures

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