Data analysis is the process of inspecting data using programming languages likes (python, R, etc..) the process of data analysis took place through gathering these data in any possible way then assessing these gathered data visually or programmatically then finally cleaning the assessed data(the process of gathering , assessing , cleaning is called data wrangling process) using the programming language and many tools and libraries that facilitate this process in every possible way these tools and libraries not only used in data wrangling process they are used in the whole process of data analysis either from the beginning till the end of the it . Data analysis is not confined on using programming languages or doing the analysis programmatically the whole process can take place using spread sheets like (Excel, Google spreadsheets, etc.) on very small-scale projects or in other words the projects that you do not need to use the programming language and its tools and libraries.