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Topic: Line graph

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	Line graph - Wikipedia, the free encyclopedia
		Thus, properties of edges in graphs can be translated into properties about vertices in line graphs; for instance, the size of a maximum independent set in a line graph is the same as the size of a maximum matching in the original graph.
		The line graph of a connected graph is connected.
		The edge chromatic number of a graph is equal to the vertex chromatic number of its line graph.
	en.wikipedia.org /wiki/Line_graph (1004 words)

	Selected Topics in Graphical Analytic Techniques
		Matrix graphs also produce displays containing multiple component graphs; however, each of those component graphs are (or can be) based on the same set of cases and the graphs are generated for all combinations of variables from one or two lists.
		This graph is useful in exploratory data analysis to determine the extent of missing (and/or "out of range") data and whether the patterns of those data occur randomly.
		In a categorized ternary plot, one component graph is produced for each level of the grouping variable (or user-defined subset of data) and all the component graphs are arranged in one display to allow for comparisons between the subsets of data (categories).
	www.statsoft.com /textbook/stgraph.html (5735 words)

	Graphing - Line Graphs and Scatter Plots
		Line graphs provide an excellent way to map independent and dependent variables that are both quantitative.
		When both variables are quantitative, the line segment that connects two points on the graph expresses a slope, which can be interpreted visually relative to the slope of other lines or expressed as a precise mathematical formula.
		Line graphs are like scatter plots in that they record individual data values as marks on the graph.
	www.ncsu.edu /labwrite/res/gh/gh-linegraph.html (968 words)

	EIA Guidelines for Statistical Graphs
		Line graphs are the simplest and most effective format to present data, particularly time series data.
		The usual method to construct a basic line graph is to plot data points representing a total, or average, over a period of time and then to join the successively plotted data points together with straight lines representing the change occurring between data points.
		In a graph, the line of interest is judged against a background grid indicated by the axes scale marks.
	www.eia.doe.gov /neic/graphs/lines.htm (1969 words)

	COM Line Graph / Chart
		In a line graph, the X axis usually represents an independent variable, which is most often a time scale.
		Line graphs can chart multiple data sets, each represented by a single line or symbol sequence, with as many data points as are meaningful.
		These "overlay" line graphs are always drawn on the same X scale as the first ("primary") graph, and you can either use the same Y scale for both graphs or add a second Y axis.
	www.graphicsserver.com /com_products/GraphChoiceLine.aspx (440 words)

	EIA Guidelines for Statistical Graphs
		Visually, the three graphs in the left column look identical and "it is almost impossible to get even a rough idea of the differences of the curves." [11] Yet, each graph represents a different trend.
		In the bottom graph, the rate of increase for the first three data points is the same rate as those at the bottom line, higher in the next two, and the same in the sixth (and last); thus, the upward blip in the bottom right graph.
		Cumulative line graphs (also known as "area" charts or stacked line graphs) display the total trend over time and the contribution of components to the total.
	www.eia.doe.gov /neic/graphs/baseline.htm (1205 words)

	Writing the Equation for a Straight Line (Site not responding. Last check: 2007-10-13)
		There are an infinite number of lines that can be drawn with the same slope and different y-intercepts but there is only one line that can be drawn with the same slope and the same y-intercept.
		Of course, the assumption is that all lines are infinite in length and one dimensional.
		Line "A" is more inviting to a runner because it goes up more slowly or, in mathematical terms, its slope is less.
	www.chemistrycoach.com /straight_line.htm (614 words)

	Line.html
		Of all the possible graphs, far and away the most popular among economists is the line graph.
		Unfortunately, it is not one of the easier graphs to understand, ranking well behind the bar graph and pie graph on an ease of interpretation scale, but substantially ahead of the scatter diagram.
		The grade on the new graph (green line) is 30.
	www.uri.edu /artsci/newecn/Classes/Art/INT1/Eco/D_A/Line.html (1222 words)

	Math Lesson: Line & Scatter
		Discussing line graphs and scatter plots allow students to better understand the types of data represented by the respective graphs and how these graphs can be used to interpret trends.
		Students will decide whether a scatterplot or line graph is the appropriate form of display when they create the graphs for their final project on arsenic in a given community.
		The big difference is that, in a line graph, the consecutive points are connected by a line segment while the points in a scatter plot are not connected at all.
	pulse.pharmacy.arizona.edu /math/line_scatter.html (1006 words)

	SparkNotes: Inequalities: Graphing Inequalities on a Number Line
		Recall that a number line is a horizontal line that has points which correspond to numbers.
		The points are spaced according to the value of the number they correspond to; in a number line containing only whole numbers or integers, the points are equally spaced.
		Then graph the point on the number line (graph it as an open circle if the original inequality was "<" or ">").
	www.sparknotes.com /math/algebra1/inequalities/section4.rhtml (444 words)

	Quality Guide - Line Graph
		A line graph represents data or sets of data that have been collected over a period of time.
		The data are plotted on a graph corresponding to standard intervals of time, and a line is drawn connecting the data points.
		The line in the graph allows managers or team members to see trends in the data (an increase, decrease, or no change) over a period of time.
	erc.msh.org /quality/pstools/pslinegrf.cfm (376 words)

	[No title]
		If you are required to graph a line (or any relation), the TI83 can provide a quick way to get the result, and it will even show you what the graph looks like.
		The numbers illustrate the best dimensions for any line graph you are likely to see in math 9 or 10.
		There are a lot of things you can do with this graph, but for our purposes, all we want to be able to do now is transfer this to graph paper.
	www.worsleyschool.net /science/files/usinga/linegraphing.html (399 words)

	Advanced Graph and Chart Software by Jpowered
		Line Graphs are used to show how two parameters are related to each other.
		A Line graph consists of two axis, a vertical or Y axis and a horizontal or X axis.
		Line Charts are used to show how two parameters are related to each other.
	www.graph-chart.com (502 words)

	NetCharts Graph Gallery - from Visual Mining
		The line is calculated based on the bar data and represents a cumulative total value of the bars.
		Polar graphs, specify points as an angle and a distance from the origin and are often used for scientific purposes.
		Radar graphs, sometimes referred to as star or spider graphs, are used primarily as a means of comparison between data sets.
	www.visualmining.com /products/graph-gallery.shtml (431 words)

	Line Graphs
		A line graph is most useful in displaying data or information that changes continuously over time.
		Notice that the title of the graph is "Average Daily Temperature for January 1-7 in degrees Fahrenheit".
		The line graph on the right shows the degrees of temperature going up the vertical axis (up and down numbers on the left of the graph) and the days of the week on the horizontal axis (going sideways from left to right).
	www.mcwdn.org /Graphs/LineGraph.html (151 words)

	Math Tutor
		The equation of the form y=mx+b is called linear because it's graph is a line.
		Thus b is known as the y-intercept of the line.
		If you are given the graph of a line, a common way to find the slope is "rise over run".
	www.rit.edu /~abesma/LCworking/MathTutorPC/functionsgraphs/lines (233 words)

	How to Graph Linear Equations - eHow.com
		This is the y-intercept of the graph (the point at which the graph crosses the y-axis).
		This line is the graph of your equation.
		Example: The graph of the equation y = 2x + 5 has a slope of 2 and crosses the y-axis at y = 5.
	www.ehow.com /how_2848_graph-linear-equations.html (391 words)

	PingPlotter Pro Manual - Timeline Graphing
		The timeline graph feature of PingPlotter allows you to trace over a long period of time - and then look back over this history to find when and where the problem occurs.
		The amount of data displayed on the graph can be changed by right-clicking on the timeline graph - then selecting the amount of time you want displayed.
		Keep in mind that the upper graph always focuses in on the number of samples in "Samples to include".
	www.pingplotter.com /manual/pro/time_line_graphing.html (567 words)

	Thirteen Ed Online - Adult Ed - Lesson Plans
		This can also be used as a review of graphing concepts, as a substitute lesson plan or as an assignment for students who may have missed the introductory activities and discussion.
		Explain that x and y are coordinates for points on the line; "m" is the variable used to represent the slope of a line and can be calculated by finding the difference in two y-values divided by the difference in the corresponding x-values.
		In other words, the slope of the line is an expression of the "rise" of the line over the "run" of the line.
	www.thirteen.org /edonline/adulted/lessons/lesson41_activities.html (1468 words)

	PlanetMath: line graph
		Part of the reason for interest in line graphs is the following observation:
		Proposition If a graph is Eulerian, then its line graph is Hamiltonian.
		This is version 1 of line graph, born on 2006-11-13.
	planetmath.org /encyclopedia/LineGraph.html (162 words)

	Charts and Graphs
		On line and bar graphs, the x and y axes must be appropriately labeled with correct unit of measure (in metrics where applicable).
		A line graph is used to show continuing data; how one thing is affected by another.
		This kind of graph is needed to show the effect of an independent variable on a dependent variable.
	www.twingroves.district96.k12.il.us /ScienceInternet/ChartsGraphs.html (437 words)

	Free Online Graph Paper / Grid Paper PDFs
		Graph Generator Lite - Specify the number of squares you want - and the size of them.
		Lined Paper with Light Verticals PDF Generator - Horizontal lines with vertical lines being in a lighter color.
		Brick graph paper is typically used for beadwork patterns, but it has other applications as well.
	www.incompetech.com /beta/plainGraphPaper (805 words)

	Preparing a graph (Site not responding. Last check: 2007-10-13)
		Regression lines: can be a straight line or a curve depending on the better fit for the data (not covered at the level of this workshop).
		The graph title should illustrate the relationship you are observing, while the axis must be labeled with units of measurements to save the reader from scanning back and forth between the graph and the table trying to know the measurement units.
		In the graph below (Figure 2), I rewarded the graph title, labeled the axis and changed the axis overlap to zero instead of 10 points between one interval and the next as it was in figure1.
	www.u.arizona.edu /~linah/graphs.html (1099 words)

	XGRAPH General Purpose 2D Graphing Utility
		If placed last on the command line, the range specifier is 'hard' in that it sets the range to the specified value regardless of what the data range was that came before it.
		Often it is helpful to add a line to your graph, perhaps to better point at something you are annotating, or to show a critical region on your graph.
		It is often useful to re-position the boundaries of the graph on the screen or printed-page, to allow more space for axis label names, or textual notes and explanations around the graph.
	www.xgraph.org (7109 words)

	Line Graphs (Site not responding. Last check: 2007-10-13)
		A line graph has a vertical axis and a horizontal axis.
		So, for example, if you wanted to graph the height of a ball after you have thrown it, you could put time along the horizontal, or x-axis, and height along the vertical, or y-axis.
		Unfortunately, it is possible to alter the way a line graph appears to make data look a certain way.
	www.mste.uiuc.edu /courses/ci330ms/youtsey/lineinfo.html (339 words)

	Quality Guide - Line Graph
		A line graph is a type of graph that represents data or sets of data that have been collected over a period of time.
		A line graph allows managers or team members to see trends in data (increase, decrease, or no change) over a period of time.
		Put a dot on the graph to show the value of the data for each time period your graph will cover (on the example below, for each month).
	erc.msh.org /quality/foutools/foulngrf.cfm (370 words)

	Graph (mathematics) - Wikipedia, the free encyclopedia
		A directed acyclic graph, occasionally called a dag or DAG, is a directed graph with no directed cycles.
		A mixed graph G is a graph in which some edges may be directed and some may be undirected.
		A binary relation R on a set X is a directed graph.
	en.wikipedia.org /wiki/Graph_(mathematics) (1782 words)

	DevCity.NET :: Chart Success Part 5 - Line Graph. Page 3
		The line segments that we draw are going to rise or fall to represent the rise or fall in sales figures from month to month.
		The first line segment will of course represent the sales figure for Jan (which will be start of the line segment) and the sales figure for Feb (the end of the line segment).
		XPosEnd is the X value of the end of the line segment and is calculated by adding the line segment width (or length, if you prefer to think of it that way) to the start point value.
	www.devcity.net /Articles/229/3/article.aspx (2016 words)

	Graphing Linear Functions - Claris Works
		Accompanying lessons on polynomial functions and/or exponential functions can be used separately or to compare the three types of functions.
		Select X-Y Line as the type of graph you wish to use and then select the side button labeled axes.
		The Math Forum is a research and educational enterprise of the Drexel School of Education.
	mathforum.org /alejandre/linear.graph.html (326 words)

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