Final answer:
The data-mining technique used to create charts and dashboards is visualization, which allows for the graphical representation of data, making it easier to understand and interpret patterns, trends, and outliers.
Step-by-step explanation:
The data-mining technique used to create charts and dashboards is known as visualization. This practice transforms complex data into graphical formats such as charts, graphs, and maps, making the information more accessible and understandable. Visualization is a powerful tool in data analysis because it allows users to quickly glean insights from large datasets and identify trends, outliers, or patterns. Tools like GIS software employ visualization to indicate clustering of points on a map, which can be crucial for decision-making processes in various fields like law enforcement, public health, and business intelligence.
For example, bar graphs, pie charts, histograms, and box plots are all common techniques utilized in visualization to represent qualitative and quantitative data. These graphical representations help in organizing and summarizing large amounts of information, providing an immediate visual impression of the data's distribution and central tendencies.