REGRESSION ANALYSIS APPLIED IN PREDICTION PROBLEMS USING AN ITERATIVE PROGRAM

Authors

  • Alfredo BONINI NETO Departamento de Matemática - Faculdades de Dracena/UNIFADRA.
  • Talita de Souza Fabiani TAVARES Departamento de Matemática - Faculdades de Dracena/UNIFADRA
  • Rafael Santos HERNANDES Departamento de Matemática - Faculdades de Dracena/UNIFADRA.

DOI:

https://doi.org/10.18011/bioeng2010v4n1p12-23

Keywords:

Least Squares method, Regression analysis, graphical interface

Abstract

This paper presents a Regression analysis by Least Squares method that aims to predict an outcome from a sequence of known data. Matlab software is used to create graphical interface making the program more iterative for the user. The program also assists in the resolution of the system of linear equations of the method of Least Squares. An example of applying the method of Least Squares is in exercises of prevision, i.e., we can predict what will be the population of a country in a year later. This is done by collecting data that have already been measured and from this data, obtain a function (1st or 2nd degree) to pass as close as possible to the known points. Once obtained this function, just give a future value (year) and get the image of this point (the population). An observation to be made, is to find the most appropriate function to be used, since it is this function that will pass as close as possible to the known points. This work is done by the scatter diagram which aims to discover what function is more suitable for use.

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References

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MATHWORKS. Disponível em: < http://www.mathworks.com>. Acesso em: 15 mar. 2009.

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Published

2010-06-21
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How to Cite

NETO, A. B., TAVARES, T. de S. F., & HERNANDES, R. S. (2010). REGRESSION ANALYSIS APPLIED IN PREDICTION PROBLEMS USING AN ITERATIVE PROGRAM. Revista Brasileira De Engenharia De Biossistemas, 4(1), 12–23. https://doi.org/10.18011/bioeng2010v4n1p12-23

Issue

Vol. 4 No. 1 (2010)

Section

Regular Section

License

Copyright (c) 2014 Alfredo BONINI NETO, Talita de Souza Fabiani TAVARES, Rafael Santos HERNANDES

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