Star wrote:Does anyone know the correct answer of one question in the test which was about "the definition of proper time"? This question has made my mind busy, I want to know whether I have selected the correct one or not!:D
nabla wrote:Star wrote:Does anyone know the correct answer of one question in the test which was about "the definition of proper time"? This question has made my mind busy, I want to know whether I have selected the correct one or not!:D
I think the correct answer is "the time interval between the two events in a reference frame where the two events occur at the same point in space" or something like this.
Nah, only the average percentile by definition stays the same. The average test score has been increasing over the years. This is evident because the percentiles for a given scaled score have been gradually decreasing. For instance, 990 used to be 97% just a few years ago. Now it's 95%. The tests are normalized to a given level of performance (ETS says this is done by a mysterious process called "equating"). Therefore, it's perfectly normal for the scaled scores of an ETS test to increase over the years. This is apparently what happened with the math section of the general GRE (before the change in 2011). Scores kept improving until a perfect score was only 94% and the test was useless for measuring math ability for math-heavy fields.bfollinprm wrote:I dont think the average scores have increased at all; it's a standardized tests, so the average by definition stays the same.
Wikipedia wrote:Prior to October 2001, a significant percentage of students were achieving perfect scores on the exam, which made it difficult for competitive programs to differentiate between students in the upper percentiles. So the test was reworked, made much more difficult, and renamed "The Mathematics Subject Test (Rescaled)." It is now considered by many to be the hardest of the GRE subject exams...
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