This research focuses on theorems governing computational methods. Computational methods are a group of techniques that acts on big content with data to get outcomes with the prospect of obtaining a decision-making process. The theorems considered in this research are mathematical methods. The predictive techniques covered consist of mathematical analysis of solving problems, which are computational methods. These theorems encompass predictive values, which come about being considered. These methods are based on these computational methods. The major objective of this research is to utilize quantitative techniques in solving complex challenges. The techniques are enumerated in this research. The evaluation of these methods is also investigated. The technique that is more accurate and reliable is identified and selected when tested on data.