Analysis of data is a process with the help of which it is possible to inspect, clean, transform and model the data so as to discover important information that helps to arrive at a conclusion and support in decision making. In an analysis of data, there are many facets and various techniques are applied. Analysis of data is generally divided into three important types. They are confirmatory data analysis, exploratory data analysis, and most importantly descriptive statistics. The most important thing in the analysis of data is the process of data cleaning. Data cleaning is the process by which the outlier, as well as other unwanted information, is corrected. Thus, analysis of data deals with various things that are very important for a business. Some of those essential things are aggregation, slicing, dicing, disaggregation, etc.