MGMAT CAT Quant

[wspringman]

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I just took my last MGMAT exam and received a 47 on the Quant section. I ran the diagnostic and noticed that my average difficulty right was 620 for PS and 630 for DS. Also, my average difficulty wrong was 670 and 730.

This doesn't seem to make sense as I've received 46's for my other Q scores and have higher numbers for my average difficulty right. My last test had 630 for ps and 680 for ds for my average difficulty right and 730 and 710 for my average difficulty wrong. Yet, my score was lower.

I may be looking at this the wrong way, so can someone please shed some light on this issue?

I took another practice exam and received another 47 in the quant portion. This time my average difficulty right was 620 for PS and 670 for DS. Also, my average difficulty wrong was 670 for PS and 730 for DS.


Any ideas?

Thanks.

[StaceyKoprince]

It's confusing because you're used to taking paper tests. But once you understand the faulty assumption (CR!), you'll get it. Put simply, your final score is not calculated based upon average difficulty across all of the questions. :)

Your score range gets calculated after every question you do, and the test then adjusts to that range estimate. Your final score is basically wherever you're at by the time the test ends. So you could answer, for example, lots of 90th+ percentile questions correctly but then answer a bunch of questions wrong at the end and get maybe a 50th or 60th percentile score, even though your overall average would be higher than that.