Which data visualization technique should be used to represent an important single metric on a dashboard?
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A. B. C. D.C.
Out of the four given options, the best visualization technique to represent an important single metric on a dashboard is a gauge.
A gauge is a graphical representation of a single value that shows progress towards a specific goal or indicates the current status of a metric. It is an effective visualization technique when there is a need to show a single metric value and its relation to a particular threshold.
Gauges typically display a circular or semicircular visual that shows a range of values as an arc. The range of values is divided into several ranges with different colors, making it easy to quickly identify where the current value falls in relation to the thresholds. Gauges can be customized with various styles, colors, and labels, making them useful for displaying a variety of metrics, such as temperature, humidity, pressure, or other measurements.
On the other hand, a heatmap is a type of visualization technique that displays a large set of values as a color matrix, which is useful for showing patterns and correlations between different values. Scatter plots are also used to show correlations between two variables, but they are not ideal for showing a single metric value. Treemaps are used to display hierarchical data, and they are not ideal for displaying a single metric value.
Therefore, a gauge is the best visualization technique to represent an important single metric on a dashboard.