What is Data Visualization
Graphical data representation
Data Visualization is the presentation of information in graphical form to facilitate perception, analysis, and decision-making.
Types of Visualizations
- Charts — line, bar, pie charts
- Maps — geographic and heat maps
- Dashboards — interactive panels with key metrics
- Infographics — comprehensive visual stories
- Graphs — network connections and dependencies
Tools
- Tableau, Power BI, Looker
- Apache Superset, Metabase
- D3.js, Plotly, Chart.js
- Python: matplotlib, seaborn, plotly
Business Applications
- Real-time KPI monitoring
- Trend and anomaly detection
- Executive presentations
- Exploratory Data Analysis (EDA)
Quality visualization transforms raw data into actionable insights.