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Comparison of answers to CR question - similar pattern

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Comparison of answers to CR question - similar pattern  [#permalink]

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New post 15 Jan 2019, 16:43
Electrical engineers have developed an energy-efficient type of light bulb that can replace the traditional incandescent bulb. The new bulb, known as the electronic lamp, operates by using a high-frequency radio signal rather than the filament featured in incandescent bulbs. Although the electronic lamp currently costs 20 times as much as its traditional counterpart, its use will prove more cost effective in the long run. A 25-watt electronic lamp could be used in place of a 100-watt incandescent bulb, and an electronic lamp used for four hours daily lasts considerably longer than an incandescent bulb used for the same number of hours per day.

The argument above assumes that

A) the typical household use of a light bulb is approximately four hours a day
B) aside from its greater efficiency, the electronic lamp resembles the incandescent light bulb in most respects
C) the type of light cast by the electronic lamp is different from that cast by an incandescent bulb
D) the price of electronic lamps will decrease as they are produced in increasingly greater quantities
E) the electronic lamp will outlast incandescent bulbs by a significant enough margin to compensate for the extra cost per bulb.

The answer is E (more macro) - A is a diversion (though more specific)


High blood pressure is a particular danger for regular smokers (those who smoke at least four packs a week). In order to help smokers lower their increased risk, a town's public health department devised a campaign describing how regular cardiovascular exercise could help anyone lower their risk for high blood pressure.

Which of the following, if true, is the best criticism of the campaign as a method of achieving the public health department's goal?

A) Many health problems caused by smoking cannot be prevented by regular cardiovascular exercise.
B) Once high blood pressure has been detected, the effectiveness of treatment, including prescription medication and exercise, can vary from person to person.
C) The campaign was directed at the entire population of the town, including the non-smokers.
D) High blood pressure is more common in adults over thirty than it is in children and young adults.
E) People who smoke are unlikely to take up a regular exercise regimen.

Answer is E - A is a diversion (though more macro)

Has anyone found definite rules for elimination which can be shared?
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Re: Comparison of answers to CR question - similar pattern  [#permalink]

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New post 15 Jan 2019, 21:14
DebbieChats wrote:
Electrical engineers have developed an energy-efficient type of light bulb that can replace the traditional incandescent bulb. The new bulb, known as the electronic lamp, operates by using a high-frequency radio signal rather than the filament featured in incandescent bulbs. Although the electronic lamp currently costs 20 times as much as its traditional counterpart, its use will prove more cost effective in the long run. A 25-watt electronic lamp could be used in place of a 100-watt incandescent bulb, and an electronic lamp used for four hours daily lasts considerably longer than an incandescent bulb used for the same number of hours per day.

The argument above assumes that

A) the typical household use of a light bulb is approximately four hours a day
B) aside from its greater efficiency, the electronic lamp resembles the incandescent light bulb in most respects
C) the type of light cast by the electronic lamp is different from that cast by an incandescent bulb
D) the price of electronic lamps will decrease as they are produced in increasingly greater quantities
E) the electronic lamp will outlast incandescent bulbs by a significant enough margin to compensate for the extra cost per bulb.

The answer is E (more macro) - A is a diversion (though more specific)


High blood pressure is a particular danger for regular smokers (those who smoke at least four packs a week). In order to help smokers lower their increased risk, a town's public health department devised a campaign describing how regular cardiovascular exercise could help anyone lower their risk for high blood pressure.

Which of the following, if true, is the best criticism of the campaign as a method of achieving the public health department's goal?

A) Many health problems caused by smoking cannot be prevented by regular cardiovascular exercise.
B) Once high blood pressure has been detected, the effectiveness of treatment, including prescription medication and exercise, can vary from person to person.
C) The campaign was directed at the entire population of the town, including the non-smokers.
D) High blood pressure is more common in adults over thirty than it is in children and young adults.
E) People who smoke are unlikely to take up a regular exercise regimen.

Answer is E - A is a diversion (though more macro)

Has anyone found definite rules for elimination which can be shared?


Question 1 is here: https://gmatclub.com/forum/electrical-e ... 85724.html
Question 2 is here: https://gmatclub.com/forum/high-blood-p ... 86570.html
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Re: Comparison of answers to CR question - similar pattern  [#permalink]

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New post 19 Jan 2019, 16:52
DebbieChats wrote:
Has anyone found definite rules for elimination which can be shared?

Hi Debbie Chats.

There are no such rules. While there are some patterns that tend to show up with regularity in Critical Reasoning questions, knowing about those patterns is not even close to being sufficient for scoring high in Critical Reasoning. To consistently answer Critical Reasoning questions correctly, you have to analyze each question individually, seeking to understand it's unique logic.

So, to score high in Critical Reasoning, rather than seek to learn a set of rules, seek to develop skill in defining exactly what makes answers incorrect or correct, by carefully analyzing every incorrect choice and every correct answer to every practice Critical Reasoning question that you see.
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Re: Comparison of answers to CR question - similar pattern  [#permalink]

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New post 26 Jan 2019, 13:58
1
There are absolutely common patterns in wrong answers to CR problems. It's not like you can just eliminate anything that has some particular words in it, or is phrased in some particular way. But there are consistent patterns in why wrong answers are wrong.

For instance, in your second problem, (A) is wrong for a common reason: it weakens the wrong conclusion! In other words, if the conclusion said "regular cardiovascular exercise could help anyone lower their risk for disease," (A) would be a much better answer choice. But because the conclusion is specifically about blood pressure, (A) misses it. This is a pattern that shows up in a lot of CR problems! But you still have to read and understand the conclusion and the answer choice to realize that this is happening.

So, knowing these patterns is useful, because it can make you more confident in your judgments and can help you decide on an answer choice more quickly. But it's not as simple as 'eliminate anything that looks like this'...
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Comparison of answers to CR question - similar pattern  [#permalink]

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New post 26 Jan 2019, 16:04
ccooley wrote:
There are absolutely common patterns in wrong answers to CR problems. It's not like you can just eliminate anything that has some particular words in it, or is phrased in some particular way. But there are consistent patterns in why wrong answers are wrong.

For instance, in your second problem, (A) is wrong for a common reason: it weakens the wrong conclusion! In other words, if the conclusion said "regular cardiovascular exercise could help anyone lower their risk for disease," (A) would be a much better answer choice. But because the conclusion is specifically about blood pressure, (A) misses it. This is a pattern that shows up in a lot of CR problems! But you still have to read and understand the conclusion and the answer choice to realize that this is happening.

So, knowing these patterns is useful, because it can make you more confident in your judgments and can help you decide on an answer choice more quickly. But it's not as simple as 'eliminate anything that looks like this'...

Thanks for you nice feedback ccooley.
But how will you explain if the choice is wrong because it is "irrelevant". I can make the answer choices "irrelevant" by putting some words side to side, isn't it?
Thanks__

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Re: Comparison of answers to CR question - similar pattern  [#permalink]

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New post 01 Feb 2019, 04:15
I agree with both the answers and both in balance is required - thank you for your suggestions
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Re: Comparison of answers to CR question - similar pattern   [#permalink] 01 Feb 2019, 04:15
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