One way to get consistent, valid data is to
be sure that instruments are calibrated properly.
One way to get consistent, valid data is to be sure that instruments are calibrated properly.
In order for assessments or experiments to be sound, they must be free of bias and distortion. Reliability and validity are two concepts that are important for defining and measuring bias and distortion.
Reliability refers to the extent to which assessments are consistent. Another measure of reliability is the internal consistency of the items.
Validity refers to the accuracy of an assessment; whether or not it measures what it is supposed to measure.
I DONT KNOW THE AWNSER
The answer is A.