Question

Your analytics professor hands back the tests from the previous exam and realizes there are several exams leftover, suggesting these students have skipped his class. He believes that their absence is caused by a poor performance on the test. If the theory is correct, the leftover papers will have lower scores than those papers handed back. He records the marks of the leftover papers with the marks of the returned papers. The professor wants to know if the group of papers he returned received a higher mark than the leftover papers. What is the best test to use

Answer 1

Answer:

the returned papers

Explanation:

The returned papers will show the correct answers because they from students who did not skipped the class.In most cases that will help with the validity of the results if the professors wants to see the deviations with the marks obtained from both parties.