<P> Validity is the extent to which a concept , conclusion or measurement is well - founded and corresponds accurately to the real world . The word `` valid '' is derived from the Latin validus , meaning strong . The validity of a measurement tool ( for example , a test in education ) is considered to be the degree to which the tool measures what it claims to measure ; in this case , the validity is an equivalent to accuracy . </P>
<P> Validity is the extent to which a concept , conclusion or measurement is well - founded and corresponds accurately to the real world . The word `` valid '' is derived from the Latin validus , meaning strong . The validity of a measurement tool ( for example , a test in education ) is considered to be the degree to which the tool measures what it claims to measure ; in this case , the validity is an equivalent to accuracy . </P>
the degree to which an experiment measures what is supposed to measure is referred to as
the degree to which an experiment measures what is supposed to measure is referred to as
validity
validity