我在gmatclub看到的，大家可以借鉴下
至少从下面的数据看出前十题太太重要了，如果前27题错2、3个，哪怕最后一个section错一半，分数应该都不错
所以个人觉得，如果时间紧，宁愿仔仔细细做30道，后面六道看情况。剩下时间如果可以仔细做两道猜四道，那跳着做，尽量避免连着错多了
New Format - Verbal What-If Scenarios
Last year when Vercules ran the what-if scenarios in this thread we found some very interesting results. Not that the GMAT has changed (or just reduced in number and minutes), I decided to make some changes. I thought of doing things in quarters (9 out of 36 questions form a quarter).
1. Importance of the first 9 questions
In the first part of the test, I have tried to see what happens if we miss the first quarter entirely (i.e. the first 9 out of the 36 questions answered wrongly while answering correctly the others). To check for experimental questions and other question level based biases I ran the scenario thrice.
Experiment - GMAC says the first 10 questions are as important as the other questions. We test that theory. We have changed it to 9 because we want to take into account the reduced number of questions in the test.
Methodology - Run 3 instances of A) missing the first 9 questions . B) answering the next 27 questions correctly.
Result - V28, V29, V30
Analysis - To make this analysis more effective, let's first check the scenarios:
First Scenario - Missed the first 9 questions - 4 CRs, 4 SCs and 1 RC - V29 - 57th Percentile
Second Scenario - Missed the first 9 questions - 5 RCs, 3 SCs and 1 CR - V28 - 52nd Percentile
Third Scenario - Missed the first 9 questions - 2 RC, 3 SC and 4 CRs - V30 -59th Percentile
It appears that there's no pattern to when the first RC will appear. In the second test, the RC was as early as the third question and as a result it made me miss the entire RC, which, I think, contributed to the score decline more than the other two tests. Also, while the average difficulty of the test was pretty easy/medium, I did see a few questions with 35%-55% difficulty on GMAT Club which will easily include them in the 700-800 level category.
Last year missing the first 11 questions resulted in the V22 (27th percentile)
Importance of the last 9 questions
Experiment In the second part, I decided to see what happens when you mark every question in the test, save the last 9 questions, correctly. Not to my surprise, I got a V40 or above every single time.
Methodology Run 3 instances of missing the last 9 questions on purpose but everything else marked correctly.
Result V40, V42, V42
Analysis In the first scenario the 9 questions I missed were - 1 entire RC (3 questions), 4 SC and 2 CR. In the second scenario, I missed 6 RC questions each. Clearly, even though RC questions are more on the test, missing SC and CR questions wrongly makes a bigger dent in the score.
Sidenote Last year, missing the 11 questions at the end resulted in a score of V38. So it is definitely a good news for test takers ![]()
3. Guessing SC but marking everything else correctly
This time we did a sectional test to see what happens if I guess all SC questions but mark everything else correctly.
Methodology: Mark CR and RC questions correctly and mark C for all SC questions.
Result: V37 with 11 questions answered wrongly.
Guessing RC and marking everything else correctly
In similar fashion, I wanted to check what happens when we guess RC but keep the SC and CR answers correct. Surprising results follow!
Methodology: Mark CR and SC correctly but mark all RC questions C.
Result - SHOCKING V34
Analysis: It is pretty clear that RC matters a whole lot more now than it used to. I would advise with caution against using this strategy. Practice your RCs and go well prepared.
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发表于 2018-11-2 05:12:30
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