What is Data visualization?
Experts describe Data Visualization as phone number list representing data graphically or visually. It is a means of allowing the brain to grasp information in a faster way. Data visualization shows relationships. It shows how the information presented relates to the result of a specific target or goal. In turn, it allows data analysis to happen more quickly.

Categories of data visualization
The five main categories of data visualization are as follows:
Hierarchical: used to display clusters of information that stem from one single source. Common examples used are ring charts, tree, and sunburst diagrams.