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Traveler: Southern Airways has a far worse safety record

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Traveler: Southern Airways has a far worse safety record [#permalink]

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30 Apr 2006, 07:52
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Traveler: Southern Airways has a far worse safety record that Air Dacentaria over the past few years, in terms of both the frequency of accidents and the severity of accidents. Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta, since it is worth paying extra to have a safer flight.

Which of the following, if ture, casts the most serious doubt on the traveler
s argument?

A. Air Dacentaria's flight from Pederton to Dacenta is nonstop, whereas Southern Airways' flight touches down in Gorinda on the way.
B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
C. For its flights from Pederton to Dacenta, Southern Airways uses a different model of airplane, with a smaller capacity, that the model Air Dacentaria uses for its flights on the same route.
D. Only in the last few years has the cost of flying from Pederton to Dacenta been more expensive on Air Dacentaria than on Southern Airways.
E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.
[Reveal] Spoiler: OA

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Last edited by Zarrolou on 13 Jul 2013, 01:21, edited 1 time in total.
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01 May 2006, 02:08
I wud favor E.

Whats the OA?
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01 May 2006, 04:00
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I go for B (if I remember correctly this is a question from GMATPrep): reason: The travel prefers safety, and argues that Southern Airways has a worse safety record than Air Dacentaria. Now you have to find a reason that explains why safety for THIS particular flight shouldn't be worse. B gives you an explanation why Southern Airways usually is less safe but not in this flight
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01 May 2006, 05:09
Is B an OA?

I doubt since it says nothing about Air Dacentaria and its usage of this
particular airport.

I prefer E.
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01 May 2006, 07:23
OA is B.
the question appeared on the GMATPrep.
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17 Jun 2006, 22:05
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foolbox wrote:
Traveler: Southern Airways has a far worse safety record that Air Dacentaria over the past few years, in terms of both the frequency of accidents and the severity of accidents. Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta, since it is worth paying extra to have a safer flight.

Which of the following, if ture, casts the most serious doubt on the traveler
s argument?

A. Air Dacentaria's flight from Pederton to Dacenta is nonstop, whereas Southern Airways' flight touches down in Gorinda on the way.
B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
C. For its flights from Pederton to Dacenta, Southern Airways uses a different model of airplane, with a smaller capacity, that the model Air Dacentaria uses for its flights on the same route.
D. Only in the last few years has the cost of flying from Pederton to Dacenta been more expensive on Air Dacentaria than on Southern Airways.
E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.

I picked E originally but this is why i think E is wrong...

although the proportions of accidents is small, SA may still have a greater accident rate than AD. thus his conclusion still holds, AD is safer.

B weakens it by giving an alternative explanation to why it SA is unsafe. Weakens the premise that SA is unsafe overall; stats are skewed b/c of that one airport.
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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13 Jul 2013, 00:38
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Can someone provide a detailed analysis on this question stuck between B and E

OA is
[Reveal] Spoiler:
B

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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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13 Jul 2013, 01:32
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fozzzy wrote:
Can someone provide a detailed analysis on this question stuck between B and E

OA is
[Reveal] Spoiler:
B

The argument says that Southern Airways has a far worse safety record that Air Dacentaria
Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta.

Since the overall safety is worse for the SA => also on a specific flight the safety is worse.
This is the argument of the text.

The correct answer will destroy this connection somehow: will show that the data is not reliable or that there are distortions, and so on...

B and E...

B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
B says that the overall rate of accidents is overestimated because SA uses a particular airport that is dangerous. So we can infer that, if SA stops using that airport, its safety level would be higher than that of the other company; and because the person will not flight in that airport, the argument is weakened.(This answer shows that the overall data is not a reliable indicator because suffers from the low safety of a single airport).

E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.
E does not affect the conclusion. "on both airlines the proportion of flights that have accidents is very small" => when comparing different companies the most important stats are the percentages (not the overall number), and E says that under this point of view there is no difference between the two companies.
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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01 Sep 2014, 10:50
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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26 Mar 2015, 02:31
I somehow feel that B assumes too much.

B obviously *might* say, as Zarralou points out, that the overall record of SA is much lower than AD. But there are 2 big red herring assumptions made in B:

1. It is assumed that most or all of the SA accidents happened at Sarmouth Airport. Just because the airport is dangerous, doesnt mean that a lot of SA accidents happened there. Maybe SA mgmt knew about the danger and employed its best pilots there, who made sure that little to no accidents happened at Sarmouth Airport. To make B the correct option, I feel, it needs to mention that a majority of the accidents by SA happened at this Airport.

2. B doesnt tell us that SA's flight on the Paderton to Decanta route will be as safe as or safer than AD. Lets assume that majority of the accidents by SA happened on a certain route. So if we remove this airport and the number of accidents on this airport from our data and recalculate the stats, we might still have ratios which are worse than AD. Just because most accidents happened (arguably) at a certain airport, doesnt make SA as safe as or safer than AD.

In contrast E uses less scandalous assumptions. It tells us that SA has more volume of flights operating and hence its statistics cannot be compared with AD. How can we compare, USA and Sri Lankan Economy?! Therefore, number for accidents per flight (analogous to GDP per capita) is a better measure of safety when comparing both the airlines, to account for the difference in scales. Since the ratios of both the airlines is "very small", we can conclude that both the airlines are equally safe.

Can someone lend some insight and tell me where I am going wrong?
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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30 Mar 2015, 11:50
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B for me too. Reasons given :
A. Air Dacentaria's flight from Pederton to Dacenta is nonstop, whereas Southern Airways' flight touches down in Gorinda on the way.
Quote:
(Stops the flight makes are not relevant )

B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
Quote:
(This gives an alternate reason for the safety of the flight in the route in Qn. Keep it.)

C. For its flights from Pederton to Dacenta, Southern Airways uses a different model of airplane, with a smaller capacity, that the model Air Dacentaria uses for its flights on the same route.
Quote:
(Models of airplane not relevant)

D. Only in the last few years has the cost of flying from Pederton to Dacenta been more expensive on Air Dacentaria than on Southern Airways.
Quote:
(cost is not relevant. Safety is.)

E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.
Quote:
(proportion of flights having accidents in misleading here, since we know the accidents are more for SA.Also, this is not giving any specific info about the particular route. Thus eliminate.)

Thus B.
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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12 Apr 2015, 01:52
Conclusion: Travel by Air Dacentaria though it's slightly more expensive because it's safer.
Premises:
- Southern Airways has more accidents & the severity is greater.
The way the author reasons is that the greater number of accidents & the greater severity indicate the less safe airline firm.
However, there can be other explainations for that record.
B best matches.
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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23 Apr 2015, 13:01
mrmikec wrote:
foolbox wrote:
Traveler: Southern Airways has a far worse safety record that Air Dacentaria over the past few years, in terms of both the frequency of accidents and the severity of accidents. Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta, since it is worth paying extra to have a safer flight.

Which of the following, if ture, casts the most serious doubt on the traveler
s argument?

A. Air Dacentaria's flight from Pederton to Dacenta is nonstop, whereas Southern Airways' flight touches down in Gorinda on the way.
B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
C. For its flights from Pederton to Dacenta, Southern Airways uses a different model of airplane, with a smaller capacity, that the model Air Dacentaria uses for its flights on the same route.
D. Only in the last few years has the cost of flying from Pederton to Dacenta been more expensive on Air Dacentaria than on Southern Airways.
E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.

I picked E originally but this is why i think E is wrong...

although the proportions of accidents is small, SA may still have a greater accident rate than AD. thus his conclusion still holds, AD is safer.

B weakens it by giving an alternative explanation to why it SA is unsafe. Weakens the premise that SA is unsafe overall; stats are skewed b/c of that one airport.

Hi mike

I am not sure , but i might have understood the question wrong.
As per my understanding traveler has opted for AD airlines for flight in comparison with SA due to safety reasons.
So weakening this conclusion would be providing instances which show SA airlines is not as bad as he thinks.

But option B infact promotes /strengthen this conclusion that SA is not safe airlines.

Kindly correct and explain
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Traveler: Southern Airways has a far worse safety record [#permalink]

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21 Jul 2015, 06:42
kanigmat011 wrote:
mrmikec wrote:
foolbox wrote:
Traveler: Southern Airways has a far worse safety record that Air Dacentaria over the past few years, in terms of both the frequency of accidents and the severity of accidents. Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta, since it is worth paying extra to have a safer flight.

Which of the following, if ture, casts the most serious doubt on the traveler
s argument?

A. Air Dacentaria's flight from Pederton to Dacenta is nonstop, whereas Southern Airways' flight touches down in Gorinda on the way.
B. Most Southern Airways flights, ut not its flight from Pederton to Dacenta, use Sarmouth airport, which because of its mountainous location is one of the world's most dangerous.
C. For its flights from Pederton to Dacenta, Southern Airways uses a different model of airplane, with a smaller capacity, that the model Air Dacentaria uses for its flights on the same route.
D. Only in the last few years has the cost of flying from Pederton to Dacenta been more expensive on Air Dacentaria than on Southern Airways.
E. Although the frequency of accidents is greater on Southern Airways, on both airlines the proportion of flights that have accidents is very small.

I picked E originally but this is why i think E is wrong...

although the proportions of accidents is small, SA may still have a greater accident rate than AD. thus his conclusion still holds, AD is safer.

B weakens it by giving an alternative explanation to why it SA is unsafe. Weakens the premise that SA is unsafe overall; stats are skewed b/c of that one airport.

Hi mike

I am not sure , but i might have understood the question wrong.
As per my understanding traveler has opted for AD airlines for flight in comparison with SA due to safety reasons.
So weakening this conclusion would be providing instances which show SA airlines is not as bad as he thinks.

But option B infact promotes /strengthen this conclusion that SA is not safe airlines.

Kindly correct and explain

Hi,

This is not just about the safety of AD airlines, it is also about the safety on the particular route from P to D. If there is something which suggest that SA airlines stats are bad on some other sectors but not in P-D sector, it will weaken the assumption that the traveler has taken that SA is unsafe overall. And (B) does exactly that. Hence it has to be (B)

Regards,
Gaurav
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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21 Jul 2015, 10:42
Only B & E looks relevant to the argument. I chose E over B. However, B) looks better. Thanks for the explanation people
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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21 Jul 2015, 23:03
the main point is safety as the customer is willing to pay extra bucks to have a safer flight and only option b deals with safety factor and cites the reason for the difference in number of crashes for both airlines,
clearly b
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Re: Traveler: Southern Airways has a far worse safety record [#permalink]

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23 Jul 2016, 22:25
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: Traveler: Southern Airways has a far worse safety record   [#permalink] 23 Jul 2016, 22:25
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