Data Science is a rapidly growing field of study that not only focuses on understanding the data but also, on predicting the future outcomes by the method of data gathering and data analysis. Usingstatistical methods to find patterns in data, we can turn an outcome in our favor by adjusting our actions and responses accordingly. In this paper, we investigate how decision-making process is leveraged with the help of data science in various fields and the ethical issues involved for the same. We also discuss how data science can foster better controlling, administering, regulating, directing and executing aspects of decision-making. This paper would ultimately serve as a reference material for individuals and organizations willing to understand the importance of data science in decision making process.