What is data analysis ? Data analysis is the process of exploring, cleansing, transforming and modelling data in order to derive useful insight, supporting decision. Tools available for it ! There are two kinds of tools used in order to carry out data analysis: 1) Auto managed closed tools: These are the tools whose source code is not available, that is these are not open source. If you want to use these tools then you have to pay for them. Also, as these tools are not open source, if you want to learn these tools then you have to follow their documentation site. Though some auto managed tools have their free versions available. Pros & Cons: Closed Source Expensive They are limited Easy to learn Example: Tableau, Qlik View, Excel (Paid Version), Power BI (Paid Version), Zoho Analytics, SAS 2) Programming Languages: Then there are suitable programming languages which can derive the same result like auto managed closed tools. Pros & Cons: These are open so...