Error Chart

Error Charts or Error Bars graphically represent the variability of data. They are typically used on graphs in order to display an error or to point out uncertainties in a reported measurement.

An Error Chart gives a general idea of how precise a certain measurement is, or conversely, how far from the reported value the true (error-free) value might be.

Usually a Bar Chart, a Line Chart, or a Dot Charts is drawn and then customized with Error Bars.