A test developer compares a student's performance on a newly developed math achievement test to the same student's performance on a well established math achievement test for the purpose of exploring the validity of the new test.

concurrent

Explanation:

Test Validity and Reliability  is known as the degree in which a test or other measuring device are truly measuring what is intended to measure.  The test question “1 + 1 = ___2__” is a valid basic addition question that truly measures a student’s ability to perform basic addition.  In many cases it becomes less valid as a measurement of advanced addition because as it put emphasis on some required knowledge for addition, it does not represent all of knowledge required for an advanced understanding of addition.  On a test designed to measure knowledge of American History, this question becomes completely invalid.  The ability to add two single digits has nothing do with history.

when two people answer a question, a choice will pop up at the top of each persons answer, and it will say mark as brainliest.

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explanation:

answer: intercourse

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