Dr.Iverson has had 25 students who have repeated her advanced economics class over the past five years.Each time,the students' grades for the second attempt in her course were nearly identical to the grades received on the first attempt.What could Dr.Iverson conclude about her testing procedures

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The fact that the grades on the second attempt were nearly identical to the first attempt suggests that Dr.Iverson's testing procedures are consistent and reliable in measuring student ability, despite the students' prior exposure to the material. However, it does not necessarily indicate that the measures are valid, well-standardized or effective in measuring abstract reasoning skills.

DrIverson Has Had 25 Students Who Have Repeated Her Advanced