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13 Sep 2021, 03:00
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
46% (01:53) correct
54%
(01:52)
wrong
based on 586
sessions
History
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Time
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Not Attempted Yet
A teacher decided to challenge 10 of her students to do their mathematics work without a calculator or computer for three months, while the rest of her class was able to use whatever tools they had at their disposal. She discovered that the 10 students’ scores improved on their homework assignments and their exams. On the basis of this experiment the teacher determined that students perform better when forced to complete their work manually rather than depending on machines.
Which of the following would, if valid, most weaken the reasoning above?
(A) The 10 students were performing poorly in the teacher’s course before the experiment.
(B) The 10 students were being tutored by other students who did have the advantage of a calculator or computer.
(C) The 10 students happened to be the best students at mathematics in the class.
(D) During the three months of the experiment, the class studied mathematics that only the 10 students had studied previously.
(E) The teacher coached the students on how to do their homework without the help of a calculator or computer.
Which of the following would, if valid, most weaken the reasoning above?
(A) The 10 students were performing poorly in the teacher’s course before the experiment.
(B) The 10 students were being tutored by other students who did have the advantage of a calculator or computer.
(C) The 10 students happened to be the best students at mathematics in the class.
(D) During the three months of the experiment, the class studied mathematics that only the 10 students had studied previously.
(E) The teacher coached the students on how to do their homework without the help of a calculator or computer.
18 Sep 2021, 04:00
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Bunuel
OFFICIAL EXPLANATION
Answer: D
STEP 1: Read the question and identify your task.
This is a Weaken question. You need to find the answer that most weakens
STEP 2: Read the argument with your task in mind.
What is the basis on which the teacher makes the argument? In this case, based on an experiment with 10 of her students, the teacher concludes that all her students would be better off doing mathematics manually than with machines.
STEP 3: Know what you’re looking for.
Most likely, the weakening statement will undermine the experiment in some fashion.
STEP 4: Read every word of every answer choice.
Answer A actually strengthens the teacher’s reasoning by making the students’ achievement even more impressive, so this option does not qualify. Answer B seems to indicate that the 10 students were receiving help that might have improved their performance. This could weaken the argument, but it does not indicate whether the other students were receiving help as well, so this option may not be as strong as another answer. Answer C only indicates how the 10 students compared to the other students but does not affect the judgment that they showed improvement from their own past performance. Thus, it does not weaken the argument. Answer D says that the students undergoing the experiment had seen the material before while the other students had not. This indicates that they had an advantage that improved their performance, and the lack of a calculator may have had nothing to do with it. This very much undermines the teacher’s reasoning and may be your strongest candidate. Answer E indicates only that the teacher gave them a methodology for working without a calculator, but this does not mean that such training enhanced their performance and does not necessarily affect the teacher’s reasoning. Answer D is the correct choice.
General Discussion
27 Sep 2021, 22:46
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VeritasKarishma GMATNinja - Can you please explain Choice B here?
If the 10 students are receiving help from those who have access to machinery tools, then can't we conclude that it weakens the statement that people who did the work manually performed better? Because indirectly they are taking help from people who had access to machines.
So ultimately machines are being used to solve.
Hence, we cannot conclude that people who forced to complete their work manually perform better than those who depend on calculator or computer.
Please correct my understanding. Thanks
If the 10 students are receiving help from those who have access to machinery tools, then can't we conclude that it weakens the statement that people who did the work manually performed better? Because indirectly they are taking help from people who had access to machines.
So ultimately machines are being used to solve.
Hence, we cannot conclude that people who forced to complete their work manually perform better than those who depend on calculator or computer.
Please correct my understanding. Thanks
