Abstract:
A meta-analysis is a research study that synthesizes many primary researchfindings by statistical methods to obtain a more accurate and reliable analytical result than that of an individual primary research study. It is a research method that is gaining more and more attention, but there are still some drawbacks that get a lot of criticism. Therefore, it has been developed to have more progress in many areas. For example, there are ready-made programs for many complex calculations. There are more statistics for examining various aspects of the data. Besides, there are more advanced research methods to solve a wide variety of data analytics problems to achieve many more advanced research results such as Meta-Regression, Multilevel Meta-Analysis, and Bayesian Meta-Analysis, etc."