Definition:Error/Absolute

Definition
Let $V$ be a variable in the context of descriptive statistics.

Let $X$ be the true value of $V$.

Let $x$ be the measured value of $V$.

The absolute error in $x$ is defined in one of three ways:


 * $X - x$


 * $x - X$


 * $\size {X - x}$

where $\size {X - x}$ denotes the absolute value of $X - x$.

Different sources use different conventions.