How company gather consumer’s data on basis of behavior and preference and how they do analytics?
There are mainly two means for data collection : explicitly and implicitly. Explicit data is information that is provided intentionally, i.e. input from the users such as movie ratings. Implicit data is information that is not provided intentionally but gathered from available data streams like search history, clicks, order history, etc.
Once you have collected the data, there are various techniques to visualize it. You can do the univariate and bivariate analysis to get better insight of your data. You can go through the below article to learn various techniques to visualize and explore the data: