# Line graph science

Printable PDF k. Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole.

They do not show changes over time. Bar graphs are used to compare things between different groups or to track changes over time. However, when trying to measure change over time, bar graphs are best when the changes are larger. Area graphs are very similar to line graphs. They can be used to track changes over time for one or more groups. Area graphs are good to use when you are tracking the changes in two or more related groups that make up one whole category for example public and private groups.

X-Y plots are used to determine relationships between the two different things. The x-axis is used to measure one event or variable and the y-axis is used to measure the other. If both variables increase at the same time, they have a positive relationship. If one variable decreases while the other increases, they have a negative relationship. Sometimes the variables don't follow any pattern and have no relationship.

Fun Graphing Exercise! When to Use. Close Window.If we can't tunnel through the Earth, how do we know what's at its center? All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.

Hottest Questions. Previously Viewed. Unanswered Questions. Wiki User Line graphs can be used for many things in Science.

Line graphs

One of the uses are comparing statistics from two different time periods. For example: Climate in compared to climate in This is just an example. Three types of graphs commonly used in science are the bar graph, line graph, and pie graph.

Asked in Atmospheric Sciences What are the three types of graphs in science? The three kinds of graph is bar graph, line graph, and pie graph. A line graph is used to show changes over time. A pie graph is used to show proportions. Science uses three types of graphs. Here is the list of graphs: the pie graph, the line graph, and the bar graph.

A graph line is a line used in drawing mathematical line in a graph. Asked in Earth Sciences What are the three types of graphs that scientists commonly use? There are three fundamental types of graphs used in science. These are the bar graph, line graph and the pie graph. Asked in Graphs Why line graph is used for temperature in a climate graph?

Asked in Graphs When do you use a line graph or a multiple line graph? A line graph is most often used to show the passage of time, and shows the increase and decrease from one point to another.

A multiple line graph is used to compare two sets of statistics. Asked in Science What is a line of best fit as a science definition?

Asked in Math and Arithmetic, Comparisons What graph is used for comparisons? Asked in Math and Arithmetic, Statistics What graph do you use to show increase and decrease? A line graph. Asked in Graphs What is a line graph and how do people use it? Asked in Graphs What is difference between a bar graph circle graph and line graph and when would you use them?

The difference is that a line graph shows the data whereas the bar graph interpret the date and the circle graph most likely use percents.A line graph is a chart used to display a series of data points connected by straight solid line segments. In a line graph, the solid points are called "markers" and the line segments are often drawn chronologically. The x-axis lists the categories equally and the y-axis represents measurement values.

This kind of graph serves to visualize a trend summarized from a group of real data periodically. For example, if you need to analyze how the revenue of your company develops in a year, making a line graph would be the most efficient solution.

The line graph made by Edraw line graph software below is a very good example:. Download and try awesome chart maker :. When to use a line graph? Below shows the situations that you need to visualize your data with a line graph. Scientific invention and findings come from doing repeated experiments, recording and analyzing experiment data, deducting an assumption and then doing more experiments and verifying the data to prove the assumption.

When doing an experiment, researchers usually record the detailed data results in a table rather than a line graph. As you can see, a table is not intuitive enough to show the trend. As has mentioned above, a line graph features showing trends, the best use of a line graph is data that changes over time. It's easy to find that almost all graphs about product sales, grade marks and other data that changes over time are presented in line graphs - people involved in need to adjust their strategies according to the trend.

Just make sure the periods are equally distributed on the x-axis. If you focus on the trend rather than the concrete values of each category, then hide the grid. Grids would squeeze the lines, dots and texts in a frame, making the line graph messy and crowded.

If there is only one category or the change over time doesn't vary obviously, you will find that the line connecting the markers looks almost flat, which is not good for analyzing the trend. In cases above, you can reduce the max value of y-axis, so that the slope goes steeper, then the trend can be seen easily.

If you are in charge of a branch company, you may compare the economy growth with branches in other regions to know your performance.

In this case, use a different color or thick line to highlight the data of your branch and color other lines gray. From the analysis above, we can draw a conclusion that line graphs work out best in representing experiment statistics and data changes over time.

Learn more line graph solutions to make better line graphs with Edraw line graph software. Line Chart Symbols. Line Graph Templates.

Line Graph Templates for Word. Edraw Max is perfect not only for professional-looking flowcharts, organizational charts, mind maps, but also network diagrams, floor plans, workflows, fashion designs, UML diagrams, electrical diagrams, science illustration, charts and graphs A versatile cross-platform mind mapping tool. Get from App Store.

### Line Graph - When to Use It?

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Line Graph - When to Use It? How and when to use line graph has always confused many people. This page offers a clear explanation of definitions, features, skills and using occasions of line graphs. Work well in showing trends chronologically. Clearly display relationships with continuous periodical data. Visualize data changes at a glance.

Matches best with periodical data. Mess the chart if many categories are compared in one line chart.A graph is a diagram that is meant to represent data and to portray a relationship. Analyzing graphs is useful for determining the general trend, relating the results of an experiment to the hypothesis and for formulating hypotheses for future experiments. When analyzing graphs, it is important to determine what the graph is displaying and why such information is pertinent to the experiment or to the context of the question.

More than one type of graph can be used to represent a single set of data. Distinguish between the various types of graphs. The main types of graphs are picture graphs, bar graphs, line graphs and scatter plots.

A picture graph uses pictures to represent values. Bar graphs use either vertical or horizontal bars to represent the values. Line graphs use lines to represent the values. Scatter plots represent the data with points, and then a best-fit line is drawn through some of the points. Read the title and axes of the graphs in order to determine which type of data is being represented. The x-axis is the independent variable, or that which can be changed.

The y-axis is the dependent variable, or that which depends on the independent variable. For example, on a graph of the height of rose plants during a period of six weeks, the x-axis would have the weeks, whereas the y-axis would have the height. Determine the general trend of the graph. In a picture graph, look for the line with the highest amount of pictures. For a bar graph, look for the highest bar. For a line graph and a scatter plot, look at the slope of the line.

If the line is pointing to the upper right corner, then the slope is positive. If the line is pointing to the lower right corner, then the slope is negative.With Ofsted going on about 'integrated curricula' it is important that students do not see subjects as insular and cut off from each other. The skills learnt in Math, English and Technology are readily and necessarily transferable to the Scientific arena.

Graphs are one of the most important tools available to scientists young and old to display data. They are:. It is a source of endless annoyance seeing a pupil miss a grade boundary by a couple of marks only to scrutinise the paper and see 3 marks thrown away due to poor graphing. This article will take you through the golden rules of drawing graphs, applicable to all exam boards, all situations, all the time.

They are even up on my classroom wall as my 'Tips for the Top'. At least half the marks for any graph question are awarded for presenting your graph according to standard conventions; this is before the actual content has even been assessed.

Before moving on from any graph question or from a graph section of your coursework, ensure you have followed the 6 Graph Commandments. If you have ticked off each of the Commandments, you are halfway to achieving a good overall mark for this particular graph. But now it is time to pick up question specific marks Depending on the coursework you are completing, the criteria for accessing the very top marks differ.

For rates of reaction, you are required to find the gradient of your graph; For osmosis and other biological investigations you are required to add error bars; still other investigations require statistical interventions such as Chi-Squared tests.

Got marks off for not drawing graphs right last time. Great help my middle aged friend. I do all my writing in pen. The ink shows up better, and in my opinion, pens are superior to pencils. Thank you so much. I have lost so many marks for my graphs and this has explained them in a way I understand!

Thank you so much! Thanks so much have an exam tommorow and had failed previously on graphing so thanks for this should hopefully help me improve. Well done. I'm busy with an extensive handout for my kids and was looking for examples of line graphs when I stumbled upon your page. This is well summarized - good job! For my first and third graphs there are titles :S The second graph deliberately doesn't have one.

Thanks for the comment. You would be surprised how often degree level students forget the basics! I'm not sure why I can't draw bar graphs. I'm also not sure why there's no title to your graphs.In the mathematical discipline of graph theorythe line graph of an undirected graph G is another graph L G that represents the adjacencies between edges of G.

Line graphs are claw-freeand the line graphs of bipartite graphs are perfect. Line graphs are characterized by nine forbidden subgraphs and can be recognized in linear time. Various extensions of the concept of a line graph have been studied, including line graphs of line graphs, line graphs of multigraphs, line graphs of hypergraphs, and line graphs of weighted graphs. That is, it is the intersection graph of the edges of Grepresenting each edge by the set of its two endpoints.

The following figures show a graph left, with blue vertices and its line graph right, with green vertices.

## Kinds Of Graphs In Science

Each vertex of the line graph is shown labeled with the pair of endpoints of the corresponding edge in the original graph. For instance, the green vertex on the right labeled 1,3 corresponds to the edge on the left between the blue vertices 1 and 3. Green vertex 1,3 is adjacent to three other green vertices: 1,4 and 1,2 corresponding to edges sharing the endpoint 1 in the blue graph and 4,3 corresponding to an edge sharing the endpoint 3 in the blue graph.

Properties of a graph G that depend only on adjacency between edges may be translated into equivalent properties in L G that depend on adjacency between vertices. For instance, a matching in G is a set of edges no two of which are adjacent, and corresponds to a set of vertices in L G no two of which are adjacent, that is, an independent set. If the line graphs of two connected graphs are isomorphic, then the underlying graphs are isomorphic, except in the case of the triangle graph K 3 and the claw K 1,3which have isomorphic line graphs but are not themselves isomorphic.

As well as K 3 and K 1,3there are some other exceptional small graphs with the property that their line graph has a higher degree of symmetry than the graph itself. For instance, the diamond graph K 1,1,2 two triangles sharing an edge has four graph automorphisms but its line graph K 1,2,2 has eight. In the illustration of the diamond graph shown, rotating the graph by 90 degrees is not a symmetry of the graph, but is a symmetry of its line graph.

However, all such exceptional cases have at most four vertices. A strengthened version of the Whitney isomorphism theorem states that, for connected graphs with more than four vertices, there is a one-to-one correspondence between isomorphisms of the graphs and isomorphisms of their line graphs. Analogues of the Whitney isomorphism theorem have been proven for the line graphs of multigraphsbut are more complicated in this case. The line graph of the complete graph K n is also known as the triangular graphthe Johnson graph J n ,2or the complement of the Kneser graph KG n ,2.

The line graphs of bipartite graphs form one of the key building blocks of perfect graphs, used in the proof of the strong perfect graph theorem. Like the line graphs of complete graphs, they can be characterized with one exception by their numbers of vertices, numbers of edges, and number of shared neighbors for adjacent and non-adjacent points. The one exceptional case is L K 4,4which shares its parameters with the Shrikhande graph.

When both sides of the bipartition have the same number of vertices, these graphs are again strongly regular.You can use it to make graph online and share your graph with everybody simply with one link. Create an online plot only takes few seconds Plotvar is the best way for making line graphpie chartbar graph or even live graph.

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### Line Graph

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