With one variable (Numerical or Categorical) you can draw different graphs such as Histogram, Bar Graph, Pie Chart, and Box Plot.

In these Histogram and Box Plot are very useful to draw graphs when the variable is numerical. If the variable is categorical it is better to use bar graph. Any data which can be represented using Pie chart can be plotted using bar graph. Bar graphs are more user friendly than Pie charts.

Watch the video to understand the above explanation with examples.

## Other posts of the series

- The Art and Science of Data Visualization Part 1 - Introduction to Data Visualization
- The Art and Science of Data Visualization Part 2 - Two Dimensional Graphs with One Variable
- The Art and Science of Data Visualization Part 3 - Box Line and Scatter Plots with Two Variables
- The Art and Science of Data Visualization Part 4 - Mapping Multidimensional Data Using 2D Graphs
- The Art and Science of Data Visualization Part 5 - Introduction to R & RStudio

Thanks for sharing, i like your article and opinion.

Thanks for sharing, i like your article and opinion.

What is the difference between Computer science and information technology?

Hi,

Computer Science is the study of the principles of computing and how computers solve problems.

Information Systems is the study of what technology/tools can best meet the Information management needs of a particular organization.

To get a full explanation on this, you can visit https://www.qatar.cmu.edu/30/ISCS