AD5-E809 Exam Dumps | Why must primary and secondary success metrics be determined pre-test and not chosen or adjusted after

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Why must primary and secondary success metrics be determined pre-test and not chosen or adjusted after activation? (Choose two.)

A. so that "days to complete test" can be estimated pre-test

B. to minimize risk of biased metric selection

C. so that "Conversion Rate of Alternative" can be estimated pre-test

D. because it is not possible to change your primary goal after the test has started

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