Computing Lower Bound of Ljung-Box Test R package Hassani.SACF version 2.0 The Ljung-Box test is one of the most important tests for time series diagnostics and model selection. The Hassani SACF (Sum of the Sample Autocorrelation Function) Theorem , however, indicates that the sum of sample autocorrelation function is always fix for any stationary time series with arbitrary length. This package confirms for sensitivity of the Ljung-Box test to the number of lags involved in the test and therefore it should be used with extra caution. The Hassani SACF Theorem has been described in : Hassani, Yeganegi and M. R. (2019) <doi:10.1016/j.physa.2018.12.028>. Software Leila Marvian Mashhad <Leila.marveian@gmail.com> Comprehensive R Archive Network (CRAN) Hossein Hassani [aut], Masoud Yarmohammdi [aut], Mohammad Reza Yeganegi [aut], Leila Marvian Mashhad [aut, cre] GPL-3 2023-06-12 application/tgz https://CRAN.R-project.org/package=Hassani.SACF doi:10.32614/CRAN.package.Hassani.SACF