  This article arises as an alternative solution to the problem of estimating
the future population of some care centers for children and adolescents at
social risk. The population of these centers fluctuates from month to month due
to various social, economic and political factors, so there is no way to
calculate exactly how many children will enter and how many will leave. To make
the estimate, a mathematical model was developed to estimate the population of
the centers in the following month based on linear regressions and it was
implemented in a spreadsheet to facilitate its use.
