Drawing Error Bars
Contents |
literature SHOWCASE Applications User Case Studies Graph Gallery Animation Gallery 3D Function Gallery FEATURES
Drawing Standard Error Bars
2D&3D Graphing Peak Analysis Curve Fitting Statistics Signal Processing standard error bars above and below Key features by version Download full feature list LICENSING OPTIONS Node-locked(fixed seat) Concurrent Network (Floating) how to draw error bars manually Dongle Academic users Student version Commercial users Government users Why choose OriginLab Who's using Origin What users are saying Published product reviews Online Store
How To Draw Error Bars In Excel
Get a quote/Ordering Find a distributor Purchase New Orders Renew Maintenance Upgrade Origin Contact Sales(US & Canada only) Find a Distributor Licensing Options Node-locked(fixed seat) Concurrent Network (Floating) Dongle Academic users Student version Commercial users Government users Why choose OriginLab Purchasing FAQ Support SERVICES Transfer Origin to new PC
How To Draw Error Bars In Excel 2010
License/Register Origin Consulting Training SUPPORT Support FAQ Help Center Contact Support Support Policy DOWNLOADS Service Releases Origin Viewer Orglab Module Product Literature Origin Evaluation All downloads VIDEOS Installation and Licensing Introduction to Origin All video tutorials DOCUMENTATION User Guide Tutorials OriginC Programming LabTalk Programming All documentation Communities User Forum User File Exchange Facebook LinkedIn YouTube About Us OriginLab Corp. News & Events Careers Distributors Contact Us All Books Origin Help Graphing Adding Data Labels and Error Bars User Guide Tutorials Quick Help Origin Help X-Function Origin C LabTalk Programming Python Automation Server LabVIEW VI Code Builder License MOCA Orglab BugFixes ReleaseNotes Video Tutorials Origin Basics The Origin Project File Workbooks Worksheets and Worksheet Columns Matrix Books, Matrix Sheets, and Matrix Objects Importing and Exporting Data Working with Microsoft Excel Graphing Customizing Your Graph Graphical Exploration of Data Gadgets Common Analysis Features X-Functions Matrix Conversion
and shows the uncertainty in that measurement. In the example shown below (Figure 1) we how to draw error bars in matlab will assume that only quantity A has an uncertainty and that this
How To Draw Error Bars On A Line Graph
is +/- 1. For example the reading of A for B = 6 is given as 38.4 but how to draw error bars in excel 2013 because of the uncertainty actually lies somewhere between 37.4 and 39.4.The line of gradient m is the best-fit line to the points where the two extremes m1 and m2 http://www.originlab.com/doc/Origin-Help/Add-ErrBar-to-Graph show the maximum and minimum possible gradients that still lie through the error bars of all the points. The percentage uncertainty in the gradient is given by [m1-m2/m =[Δm/m]x100% In the example m1 = [43.2-30.8]/10 = 1.24 and m2 = [41.7-32.7]/10 = 0.90.The slope of the best fit line (m) = [42.4-31.8]/10 = 1.06In the example the uncertainty is [1.24-0.90]/1.06 http://www.schoolphysics.co.uk/age16-19/General/text/Uncertainties_in_graphs/index.html = 32%Alternatively the value of the gradient can be written as 1.06 +/-0.17 If the lines are used to measure an intercept (in this case on the Y (quantity A) axis) then there will be an uncertainty in this value also.For the line of gradient m the intercept is 31.8For the line of gradient m1 it is 30.8 and for the line of gradient m2 it is 32.7.So the value for the intercept could be quoted as 31.8 +/-1.0.If there is an uncertainty in both the quantities A and B then instead of an error bar you would have an error rectangle. The maximum and minimum gradient lines should pass through the error rectangle for each point on the graph (see Figure 2). N.B the comments in this section about uncertainty and errors apply to a curve as well as a straight line graph although of course the gradient of the graph would vary along the curve. A VERSION IN WORD IS AVAILABLE ON THE SCHOOLPHYSICS CD Top of page © Keith Gibbs 2016
error, or uncertainty in a reported measurement. They give a general idea of how precise a measurement is, or conversely, how far https://en.wikipedia.org/wiki/Error_bar from the reported value the true (error free) value might be. Error bars http://www.thestudentroom.co.uk/showthread.php?t=725381 often represent one standard deviation of uncertainty, one standard error, or a certain confidence interval (e.g., a 95% interval). These quantities are not the same and so the measure selected should be stated explicitly in the graph or supporting text. Error bars can be used to compare visually two error bars quantities if various other conditions hold. This can determine whether differences are statistically significant. Error bars can also suggest goodness of fit of a given function, i.e., how well the function describes the data. Scientific papers in the experimental sciences are expected to include error bars on all graphs, though the practice differs somewhat between sciences, and each journal will have how to draw its own house style. It has also been shown that error bars can be used as a direct manipulation interface for controlling probabilistic algorithms for approximate computation.[1] Error bars can also be expressed in a plus-minus sign (±), plus the upper limit of the error and minus the lower limit of the error.[2] See also[edit] Box plot Confidence interval Graphs Model selection Significant figures References[edit] ^ Sarkar, A; Blackwell, A; Jamnik, M; Spott, M (2015). "Interaction with uncertainty in visualisations" (PDF). 17th Eurographics/IEEE VGTC Conference on Visualization, 2015. doi:10.2312/eurovisshort.20151138. ^ Brown, George W. (1982), "Standard Deviation, Standard Error: Which 'Standard' Should We Use?", American Journal of Diseases of Children, 136 (10): 937–941, doi:10.1001/archpedi.1982.03970460067015. This statistics-related article is a stub. You can help Wikipedia by expanding it. v t e Retrieved from "https://en.wikipedia.org/w/index.php?title=Error_bar&oldid=724045548" Categories: Statistical charts and diagramsStatistics stubsHidden categories: All stub articles Navigation menu Personal tools Not logged inTalkContributionsCreate accountLog in Namespaces Article Talk Variants Views Read Edit View history More Search Navigation Main pageContentsFeatured contentCurrent eventsRandom articleDonate to WikipediaWikipedia store Interaction HelpAbout WikipediaCommunity portalRecent changesContact page Tools What links hereRelated changesUpload
Anglia Ruskin University University of the Arts London (UAL) Aston University Bangor University University of Bath Bath Spa University University of Bedfordshire University of Birmingham Birmingham City University University of Bolton Bournemouth University BPP University University of Bradford University of Brighton University of Bristol Brunel University University of Buckingham Buckinghamshire New University University of Cambridge Canterbury Christ Church University Cardiff Metropolitan University Cardiff University University of Central Lancashire (UCLan) University of Chester University of Chichester City University London Coventry University University of Cumbria De Montfort University University of Derby University of Dundee Durham University University of East Anglia (UEA) University of East London Edge Hill University University of Edinburgh Edinburgh Napier University University of Essex University of Exeter Falmouth University University of Glasgow Glasgow Caledonian University University of Gloucestershire Glynd?r University Goldsmiths University University of Greenwich Heriot-Watt University University of Hertfordshire University of Huddersfield University of Hull Imperial College, London Keele University University of Kent King's College London Kingston University Lancaster University University of Leeds Leeds Metropolitan University Leeds Trinity University University of Leicester University of Lincoln University of Liverpool Liverpool Hope University Liverpool John Moores University London Metropolitan University London School of Economics London South Bank University Loughborough University University of Manchester Manchester Metropolitan University (MMU) Middlesex University University of Newcastle New College of the Humanities University of Northampton Northumbria University University of Nottingham Nottingham Trent University Open University University of Oxford Oxford Brookes University University of Plymouth University of Portsmouth Queen Margaret University Queen Mary, University of London Queen's University Belfast University of Reading Robert Gordon University University of Roehampton Royal Holloway University of Salford University of Sheffield Sheffield Hallam University S