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Graph

A representation of numbers signifying different data sets. Graphs are vitally important in tracking past performance of economic data with the aim of predicting its future behavior. For example, a government agency may create a graph of unemployment claims over time. If claims have trended downward, the agency may predict that unemployment may remain low. Graphs are also crucial for technical analysts, who use them to track securities' performance to help make investment decisions. Graphs are also known as charts.

See chart.

graph

a means of portraying data in pictorial form that shows the relationship between an INDEPENDENT VARIABLE and a DEPENDENT VARIABLE by labelling and scaling the two axes of the graph to represent the two variables, plotting joint values of the two in the space between the axes and joining these values with a line. Frequently, graphs show time as the independent variable, depicting by means of a line how the dependent variable has changed over time.
References in periodicals archive ?
With respect to type of calculator, seven studies compared a graphing calculator treatment group to a control group that had access to scientific calculators.
Panel D of Figure 1 shows yet another way to violate Tufte's (1983) rule about not using formatting to distract the reader's attention; not graphing negative values in a time series.
Spreadsheet programs such as Microsoft [Excel.sup.TM] and Lotus [123.sup.TM] or Quattro [Pro.sup.TM] have graphing abilities, and will lead you through the design and completion of the graphs.
I went into the chart mode and I just tried all the options for the graphing grid and then used the various editing to produce the required reporting log sheet.
If we are teaching mathematics and graphing skills we may wish to use software to generate a variety of related graphs so that the effect of changing a constant can be studied.
In December, we continue with the weather graphing but construct pictographs for a change of pace.
At Walhalla High School in South Carolina, high school students reading The 13th Warrior in English and studying trade routes in World Geography could predict migration patterns using the TI-83 Plus graphing calculator.
Initially, teachers can use the "graph grab bag" option in the menu to generate sample graphs that introduce students to data representation and graphing. Students can enter their own data by clicking on the "data center" icon to bring up a 13x5 grid in which each column takes in a field of data.
It is only natural, he says, for teachers to embrace graphing calculators "because of all the power--to visualize, to analyze, to explore from many directions"--that is put directly and literally into students' hands.
As students' data-collecting and graphing skills become more sophisticated, the types of information they gather may become more complicated.
The unit is a video interface for TI's graphing calculators, and displays or records their screens on TVs, VCRs, video cameras, video projectors and other video equipment.
Since the mid-1980s, the use of graphing calculators and educational software in high school math classes has exploded.

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