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The rise in free, do-it-yourself instructions on the Internet for home

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Re: The rise in free, do-it-yourself instructions on the Internet for home  [#permalink]

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New post 04 Sep 2014, 10:52
ronr34 wrote:
Thanks! This puts to bed a few problems I had with this question.
When I read this question, it was clear to me that the people getting hurt are a different set of people than the "home service technicians". Am I correct in inferring that part at least, or is this also a stretch?

Dear ronr34,
Great question! That's a detail in a gray area --- the argument absolutely would not make sense if those two were not different groups, but technically, we have no explicit guarantee that they are different. Technically, it's the explicit evidence that we have trust, not necessarily the validity of the argument as a whole, although the GMAT always gives a valid argument on an inference question. This is very much in a gray area.
I would say --- something of this sort the GMAT wouldn't touch with a ten-foot pole. It's not quite up to the standard of a right answer for an inference question, but it's far too close to be a wrong answer. The GMAT is very good about giving us one unambiguously right answer and four unambiguously wrong answers. They scrupulously avoid anything in a gray zone.
Does this make sense?
Mike :-)
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Re: #Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 06 Oct 2015, 01:53
The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

Which of the following can be inferred from the argument above?

A. The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.

As per paragraph, Number of injuries has increased instead of increased number of people with injuries.

B. Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.

Same problem here. Most people can't be inferred.

C. The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material. out of scope.

D. Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.

This is ok. not all free do-it-yourself home repair instructions------------> equivalent to most free do-it-yourself home repair instructions

E. As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.

talks about probable future. So, can't be inferred from the paragraph.
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#Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 06 Oct 2015, 11:41
The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

Which of the following can be inferred from the argument above?

A. The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.
(This may or may not include people who followed the instructions from Internet. So Invalid.)

B. Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.
(Reverse is stated in argument. the no of people who got injured as their home repairs from internet instructions increased but people who got injured while attempting home repairs may or may not include people who followed the instructions from Internet and this need not most and cannot be inferred from the argument.)

C. The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.
(I don't understand how can we infer this info.)

D. Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.(Not all does not mean most.)

E. As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.
(We cannot infer future scenario.)

(can someone explain how can we infer C. For me if we ignore not all- most scenario then D can be a good option.)
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#Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 07 Oct 2015, 11:04
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The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

x= attempt to home repair using instructions from internet.

Which of the following can be inferred from the argument above?

A. The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.
(we do not know if injured people are technicians or not.)

B. Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.
(argument only talks about "number" of people injured by x. We do not know percentage of such people to infer the word "most", as implied in this statement)

C. The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.
(Not very clear at first. Hold on)

D. Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.
(last line of the argument starts with "not all" and not all <> most, so we cant conclude this. May be there is just one such instruction that do not provide clear information)

E. As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.
("will suffer", implies that something will be repeated in future. We only have information on what is happening at present. So cant conclude whether such effect will continue in future)

After elimination C remains.
Now additional thoughts on C:
If home technicians would have been able to sell the instructions on internet and its sales would have been equal to revenue lost in repair service, then overall they would have experienced decrease in revenue at all.

With or without validity of this additional thought C remains by poe.
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Re: The rise in free, do-it-yourself instructions on the Internet for home  [#permalink]

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New post 06 Nov 2015, 13:30
Dear mcwoodhill,

Remember for inference questions the correct answer choice "MUST BE PRECISELY CORRECT".

Here goes detailed analysis of each answer choice:


(A) The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased

INCORRECT.

Why???

Because there might be the case that number of people might "Do Not Change" or even "Decrease" but number of injuries per person increases.



(B) Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.

INCORRECT.

We can not infer that. There might be other reasons also.


(C) The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.

CORRECT

As mentioned in the argument, this is the reason the revenues are decreasing. This choice simply means that loss of the technicians (because people start using self instructions) has not been compensated by sale of online instructions, which is true.


(D) Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.

INCORRECT

Argument only mentions "Not All" of the do-it-yourself instructions on the Internet are written as well as they should be. We can not infer "Most" clearly out.



(E) As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.

INCORRECT.

It is nothing but a generalized statement.


Hope it helps!


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Re: The rise in free, do-it-yourself instructions on the Internet for home  [#permalink]

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New post 09 Nov 2015, 09:20
The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

Which of the following can be inferred from the argument above?

(A) The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.
First is not stated in the argument. While it is correct to say that the number of injured people increased, we have no data about the number of home/not home repair technicians. To assume so would tho make sense, but is out of scope.

(B) Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.
Clearly out of scope as there could always be other reasons involved.

(C) The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.
This has to be true. Fact is that home technicians incurred a decrease in revenues. They might have offered some do-it-yourself home repairs instructions themselves, but this action didn't suffice to offset the decline in revenues.

(D) Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.
Out of scope. Statement would be tempting if it didn't use the word "most."

(E) As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.
Based on the data given such future cannot be predicted. This would be a reasonable real life inference, however in our case it is out of scope. It may well be that people will one day realise how dangerous the technique of do-it-yourself can be and will therefore revert back to professional service, thus the revenues for homeowners could actually increase again.

Hope it helps.

Best,
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Re: The rise in free, do-it-yourself instructions on the Internet for home  [#permalink]

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New post 23 May 2016, 17:56
ConnectTheDots wrote:
I thought it to B. Could someone please help on this ?


Hi there,

The statements establishes that there has been a rise in free, do-it-yourself instructions on the Internet for home repairs and this has led to a decrease in revenue for home service technicians an increase in the number of injuries caused by people who have attempted home repairs themselves. And it also states that, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

So we know could pre-think that whether due to the "free, do-it-yourself internet niche" home service technicians have made money or not, in general, if they have made money, this represents less money than what they´ve forgone from their traditional business. Also, we could pre-think that some of the do-it yourself instructions are not clearly written (restatement), etc.

Let´s analyze the statements:

(A) The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased. We have no ground to state this, but it is close

(B) Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet. Tempting but we don´t know anything about these statistics. What if just 40% of the people who were injured were following free do-it-yourself instructions on the Internet (this is less than most).

(C) The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material. This is exactly one our pre-thoughts. If they lost business overall, then whether they (the technicians) through the "free, do-it-yourself internet niche" made money or not, the money they could have made represents less money than what they have forgone from their traditional business.

(D) Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions. Tempting, but we don´t know anything about this statistic to say "most" or anything like it.

(E) As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue. This could be true or false. Online instructions could increase and fewer people would contact home service technicians. Maybe the market stabilizes or maybe it expands with the advent of new technologies, social media, etc. A past result/trend is not necessarily a good predictor of the future.

Hope this helps!

Best,

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Re: #Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 14 Mar 2017, 03:27
mikemcgarry : Hi Sir, sorry to bother you again ...but can you explain this question ...my initial reaction was option C is totally out of scope ...and even after some deliberation I am NOT able to get the logic behind it ...
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Re: #Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 14 Mar 2017, 09:13
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mihir0710 wrote:
mikemcgarry : Hi Sir, sorry to bother you again ...but can you explain this question ...my initial reaction was option C is totally out of scope ...and even after some deliberation I am NOT able to get the logic behind it ...

Dear mihir0710,

I'm happy to respond. :-)

First of all, I am going to recommend this blog:
GMAT Critical Reasoning: Find the Conclusion or Inference

Look at the prompt:
The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.
If all this is true, what are some very certain and clear conclusions?
We know there free, do-it-yourself instructions on the Internet for home repairs, and these have been increasing.
We know revenue for home service technicians has declined.
We know the number of injuries caused by people who have attempted home repairs themselves has increased.
We don't know whether these people were following the directions correctly.
We don't know how many of these people were home service technicians.
We don't know exactly how the injuries have happened.

Which of the following can be inferred from the argument above?
A. The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.

Well, hmm. We know that the total number of people injured has increased. Have the majority of injured people not been home repair technicians? Unclear? Naively, it would seem that home repair technicians might less likely to get injured, because they have some kind of training, but perhaps this training gives them the confidence to take wild risks, and so they get injured more than folks who are not home repair technicians. We don't know. We could imagine a scenario in which this is true, but we also could imagine a scenario in which this is false. This is not an inference.

B. Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.
We have no way to know this. Perhaps they were following the instructions and the instructions were poorly written, or perhaps the instructions were flawless but people didn't follow them. We don't know. This is not an inference.

C. The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.
Hmm. We didn't know about this case, home service technicians selling online do-it-yourself home repair instructions. We don't know how popular it is, how widespread, especially since there is free material on the web, but we do know quite clearly that the home service technicians have lost money: their revenue has declined. We know that. Therefore, either the sale of online instructions or any other sources of revenue must has not equaled the loss of their revenue because people do the repairs themselves. If revenue declines, loss must be greater than gain. This looks like a solid inference.

D. Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.
Maybe--or maybe the safety information is crystal clear and people simply disregard it. We don't know. This is not an inference.

E. As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.
This could be true, or it could be true that the market is already saturated (as often happens with free & available material). In other words, all the people who would be inclined to attempt home repairs themselves are essentially already doing so. There always will be a segment of the population--some old folks, folks who are mechanically inept, etc.--who always will opt to pay a home service technicians rather than attempt it themselves for free. If everyone besides these people are already doing it themselves, then the home service technicians' revenue has already hit bottom.

The best answer, the best inference, is (C).

It's true that (C) begins by introducing something new: home service technicians selling online do-it-yourself home repair instructions. We didn't hear about this before, but that doesn't matter. If the overall revenue has declined, any gain must be bigger than any loss.

Does all this make sense?
Mike :-)
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Re: #Top150 CR: The rise in free, do-it-yourself instructions  [#permalink]

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New post 05 Apr 2017, 07:15
souvik101990 wrote:
The rise in free, do-it-yourself instructions on the Internet for home repairs has led to a decrease in revenue for home service technicians and an increase in the number of injuries caused by people who have attempted home repairs themselves. Unfortunately, not all of the do-it-yourself instructions on the Internet are written as well as they should be.

Which of the following can be inferred from the argument above?

A. The number of people who are not home repair technicians and who have been injured while attempting home repairs has increased.

B. Most people who are injured while attempting home repairs have done so while following instructions found in free do-it-yourself instructions on the Internet.

C. The overall sale of online do-it-yourself home repair instructions by home service technicians has not been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material.

D. Most free do-it-yourself home repair instructions found on the Internet do not provide enough clear information regarding safety precautions.

E. As more free do-it-yourself instructions for home repairs are made available on the Internet, home service technicians will suffer more losses in revenue.


The correct answer choice in an inference question must be true according to the information in the text.
By presenting one case in which the selection is not true, The inference cannot be made.

Let´s have the following figures:

HST (Home Service Technicians) Revenue = 10,000
Divided in 2 parts => Repairs: 8,000 and Sales online of instructions: 2,000
Loss of revenue in repairs due to free do-it yourself instructions on the Internet = 2,000
Loss of revenue in Sales online of instructions = 0

New HST revenue = 8,000 (all loss has been in repairs)

The overall sale of online do-it-yourself home repair instructions by home service technicians is still 2,000
The loss of revenue the technicians have incurred due to free offerings of this sort of materialis 2000

So, the overall sale of online do-it-yourself home repair instructions by home service technicians has been equal to the loss of revenue the technicians have incurred due to free offerings of this sort of material, 2,000 both.

This shows that C is not always true, and thus it is not correct.
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Re: The rise in free, do-it-yourself instructions on the Internet for home  [#permalink]

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New post 20 Jun 2018, 11:44
nhanlevent wrote:
The question does not mention that the the home service technicians made online instructions. In addition, it says the online instructions are free. How could the technicians gain any cents of revenue from "selling them"?. C is not correct and this is not a good GMAT question.


The question does not mention that the the home service technicians made online instructions.
--> Yes its not must to mention that service technicians made online instructions, but even if they did their revenue was less.

In addition, it says the online instructions are free. How could the technicians gain any cents of revenue from "selling them"?
--> On Youtube most of the videos available are free for viewers but people who upload videos earn money from them. So basically it is possible.
Re: The rise in free, do-it-yourself instructions on the Internet for home &nbs [#permalink] 20 Jun 2018, 11:44

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