<statistics> The extent to which an assessment measures what it is meant to measure and the extent to which inferences and actions made on the basis of test scores are appropriate and accurate. It is also a measure of the usefulness, meaningfulness and appropriateness.

It is an indication of the consistency with which the tool or assessment measures what it is designed to measure, excluding extraneous features from such measurement.

For example, if a student performs well on a reading assessment, how confident is the assessor that the student is a good reader?

A valid criterion-referenced assessment is aligned with the standards against which the assessment is compared, and provides an accurate and reliable estimate of students' performance, relative to the defined standard, and is fair.

An assessment cannot be valid if it is not reliable, appropriate, meaningful and useful.

See: bias, reliability

(08 Mar 2006)

validate, validation, validation, validation < Prev | Next > validity, valine, valine-pyruvate transaminase

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums

1. The extent to which a measurement, test or study measures what it purports to measure.

2. Occasionally, accuracy.

(11 Mar 2008)

validation, validation, validation, validity < Prev | Next > valine, valine-pyruvate transaminase

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums