Chart Terminology
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Term
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Definition
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Axes
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Straight lines on a chart that provide a framework for measurement and reference. Typically, the X-axis and Z-axis are used to display label items, and the Y-axis shows values or facts (measurable items), such as units and amounts.
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Values
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Graphic indicators that represent data. bar charts display values in either vertical or horizontal bars. Pie charts use wedge-shaped slices to represent values.
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Plot Area
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The area bounded by the axes is called the plot area. In the case of the pie chart, the plot area is defined by a circle representing the totality of all data items.
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Planes
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In all charts (except pie charts), planes provide background and graphed reference for charted values. Planes define horizontal, vertical, and background fields for a chart.
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Legend
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An information box containing color-keyed labels used to identify different data values represented on a chart.
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Grid Lines
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Straight horizontal and vertical lines arranged in scaled increments that provide calibrated guidelines for value interpretation.
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Bar
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A linear measure of a value used in bar charts.
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Slice
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A spacial measure of a value used in pie charts.
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