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8.DataVisualization.pptxVisualizing and Exploring Data
Data visualization - the process of displaying data (often in large quantities) in a meaningful fashion to provide insights that will support better decisions.
Data visualization improves decision-making, provides managers with better analysis capabilities that reduce reliance on IT professionals, and improves collaboration and information sharing.
Data Visualization
Tabular data can be used to determine exactly how many units of a certain product were sold in a particular month, or to compare one month to another.
For example, we see that sales of product A dropped in February, specifically by 6.7% (computed as 1 – B3/B2). Beyond such calculations, however, it is difficult to draw big picture conclusions.
Example 3.1: Tabular vs. Visual Data Analysis
A visual chart provides the means to
easily compare overall sales of different products (Product C sells the least, for example);
identify trends (sales of Product D are increasing), other patterns (sales of Product C is relatively stable while sales of Product B fluctuates more over time), and exceptions (Product E’s sales fell considerably in September).
Example 3.1: Tabular vs. Visual Data Analysis
A dashboard is a visual representation of a set of key business measures. It is derived from the analogy of an automobile’s control panel, which displays speed, gasoline level, temperature, and so on.
Dashboards provide important summaries of key business information to help manage a business process or function.
Dashboards
