Why is the following statement true: “A test can be reliable but not valid, but it can’t be valid if it is not reliable.” Define and give examples of objective and subjective criteria, and explain why...

Why is the following statement true: “A test can be reliable but not valid,

but it can’t be valid if it is not reliable.”

Define and give examples of

objective and subjective criteria,

and explain why criteria must be

reliable and valid.