A couple of questions about the Free "150" questions

[Knicks]

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Is there a converter out there that predicts your actual score?


And for those of you who did those free "150" questions and have taken the Step 2 CK exam, how accurately did it predict your actual score?

 

[Xtrasystolic]

I only know of the medfriends estimator (here).

The free items are a terrible predictor, underpredicted my actual score by about 40. Which is not hard to imagine considering it's based on just 130 something questions.