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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
CCRD 22 Graphs: (a) Pareto graph of t-values indicating the influences of independent variables and their interactions on the response variable. (b) Comparison between predicted values and actual values obtained experimentally.