Error bar


Error bar

Error bars are used on graphs to indicate the error in a reported measurement. They give a general idea of how accurate a measurement is, or conversely, how far from the reported value the true (error free) value might be. Often, but not always, the error bars indicate one standard deviation of uncertainty.

Error bars can be used to visually compare two quantities, to determine whether differences are statistically significant. They can also show how good a statistical fit the data has to a given function. 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 its own house style.

External links

* [http://www.ncsu.edu/labwrite/res/gt/gt-stat-home.html Using Error Bars in your Graph] — North Carolina State University


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • error bar — noun Mathematics a line through a point on a graph, parallel to one of the axes, which represents the uncertainty or error of the corresponding coordinate of the point …   English new terms dictionary

  • error bar — noun A bar used on a graphs to indicate the range of one standard deviation in the result of an experimental measurement …   Wiktionary

  • error bar — noun Date: 1968 the estimated uncertainty in experimental data …   New Collegiate Dictionary

  • error bar — noun : the estimated uncertainty especially in data on a graph usually expressed as the range of values lying between a plotted value plus or minus a value ; broadly : degree of imprecision …   Useful english dictionary

  • Error analysis — is the study of kind and quantity of error that occurs, particularly in the fields of applied mathematics (particularly numerical analysis), applied linguistics and statistics. Error analysis in numerical modelling In numerical simulation or… …   Wikipedia

  • Error — The word error has different meanings and usages relative to how it is conceptually applied. The concrete meaning of the Latin word error means wandering or straying . To the contrary of an illusion, an error or a mistake can sometimes be… …   Wikipedia

  • Error Fundamental de la Atribución — Saltar a navegación, búsqueda El error fundamental de atribución (conocido también como sesgo de correspondencia o efecto de sobre atribución) es la teoría que describe cognitivamente la tendencia o disposición de la gente a sobredimensionar… …   Wikipedia Español

  • Bar-Hebraeus — (1226 near Malatya, Sultanate of Rûm (modern Turkey) – 30 July 1286 in Maraga, Persia) was catholicos (bishop) of the Syriac Orthodox Church in the 13th century. He is noted for his works addressing philosophy, poetry, language, history, and… …   Wikipedia

  • Error message — An error message is information displayed when an unexpected condition occurs, usually on a computer or other device. On modern operating systems with graphical user interfaces, error messages are often displayed using dialog boxes. Error… …   Wikipedia

  • Error-correcting codes with feedback — In mathematics, computer science, telecommunication, information theory, and searching theory, error correcting codes with feedback refers to error correcting codes designed to work in the presence of feedback from the receiver to the sender.See… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.