Nwosu, Ugochinyere I, and Chukwudi P Obite. “Methods for Estimating Missing Values in Descriptive Time Series Statistics: Novelty and Efficiency under Buys-Ballot”. International Journal of Mathematical Research 9, no. 1 (November 16, 2020): 72–80. Accessed December 22, 2024. https://archive.conscientiabeam.com/index.php/24/article/view/2213.