1. A computer system for sampling a translation to determine an overall quality thereof, the computer system comprising a processor and memory, wherein: the memory stores a source document corresponding to a first language, a target document comprising a translation of the source document in a second language, distinct from the first language, and executables comprising a metric module, an error reporting module, and an output module; the computer system is programmed to, by executing the metric module, identify a sample comprising substantially less than an entirety of the translation, a source portion selected from the source document, and a corresponding target portion selected from the target document; the computer system is programmed to, by executing the error reporting module, present to a human reviewer a list of preset error categories when the sample is being evaluated by the human reviewer; and the computer system is programmed to, by executing the output module, generalize error data associated with the sample into an overall quality characterization of the entirety of the translation.