statistical measures regression bivariates and correlation

statistical measures regression bivariates and correlation

1. statistical techniques bivariates allow analysis set of two features of individuals in a population for the purpose of detecting possible relationships between them.

2. It covers the following topics: Linear regression - Correlation - Dispersion diagram.

3. Regression

   • We use the word regression to signify the estimate of a variable based on another value unknown, corresponding to the another variable.

4. Correlation

   • The correlation between two variables seeks to determine the degree of relationship that exists between the two of them. It is calculated with the coefficients of correlation
     • Correlation positive
       • It is said that there is a correlation positive linear between two variables, if by increasing or decreasing the values of the independent variable increase or decrease those of the dependent variable
     • Correlation negative
       • When increasing the values of the independent variable decrease the values of the dependent variable or vice versa, The linear correlation is said to be negative