Is the extent to which differences in observed scale scores reflect true differences among objects on the characteristic being measured, rather than systematic or random errors.

Validity

Explanation:Validity is the type of claim that is made towards the measuring of reliability of any element. The differences appearing in the measurement of the elements displays the validly factor is not up to the mark which indirectly implies that reliability is not high. Validity is the situation in which all the parameters appearing in the element is perfect. If validity is perfect then only perfect reliability is achieved.

answer; fosslls and artifacts;

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