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# Temperatures in the Pacific Northwest have risen steadily

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CEO
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Temperatures in the Pacific Northwest have risen steadily [#permalink]

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23 Sep 2003, 17:33
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56% (03:16) correct 44% (06:56) wrong based on 663 sessions

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Temperatures in the Pacific Northwest have risen steadily since 1981, averaging 2.07 degrees Fahrenheit warmer north of the 46th parallel than in the previous decade. Precipitation and water-table levels, which have historically maintained a measurable relationship to each other (within a scaled range of two to four points), have varied drastically from 1987 to 1991, sometimes deviating as much as six points in fewer than eight months. Reports from Canada indicate a similar median temperature increase, estimated at 2.02 degrees Fahrenheit; research from a 1992 study measures the relational swing in moisture levels at no more than three points.

Of the following, which conclusion is best supported by the evidence above?

The higher the temperature of a given area, the more likely it is that the water levels will vary.

The variation in temperature in the last decade has been less than the fluctuation of moisture.

When temperatures rise north of the 46th parallel, natural water exchange between land and atmosphere must change in the same proportion.

Within the last ten years, water table and precipitation levels have varied more in the Pacific Northwest than they have in Canada.

Canada will have more stability in weather than will the area of the United States above the 46th parallel.

[Reveal] Spoiler: OA

Last edited by pqhai on 24 Aug 2013, 00:28, edited 1 time in total.
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23 Sep 2003, 18:59
I'll go with D. It's stated that the Pacific NW prec. and water table levels "have varied drastically" (6points is cited), but the moisture level swing in Canada was "no more than three points" (which is within the scaled range of 2-4 given as normal a few sentences before).

So, the precipitation and water table levels varied more in the Pac NW than in Canada.
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24 Sep 2003, 01:29
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Also vote for D.

the Pacific Northwest—up to 6 points
Canada—up to 3 points
CEO
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24 Sep 2003, 13:55
stolyar wrote:
Also vote for D.

the Pacific NorthwestтАФup to 6 points
CanadaтАФup to 3 points

D is correct

i didnt see that moisture levels and precipitation/water levels are one and the same..
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24 Sep 2003, 15:19
praet, stolyar where are you getting your questions from?...they're pretty challenging...
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24 Sep 2003, 21:01
I got them from many sources: my own brain, LSAT materials, logic and linguistic books, some other forums, and so on.
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Re: Temperatures in the Pacific Northwest have risen steadily [#permalink]

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09 Mar 2015, 23:06
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).

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Re: Temperatures in the Pacific Northwest have risen steadily [#permalink]

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21 Jul 2015, 07:37
Praetorian wrote:
Temperatures in the Pacific Northwest have risen steadily since 1981, averaging 2.07 degrees Fahrenheit warmer north of the 46th parallel than in the previous decade. Precipitation and water-table levels, which have historically maintained a measurable relationship to each other (within a scaled range of two to four points), have varied drastically from 1987 to 1991, sometimes deviating as much as six points in fewer than eight months. Reports from Canada indicate a similar median temperature increase, estimated at 2.02 degrees Fahrenheit; research from a 1992 study measures the relational swing in moisture levels at no more than three points.

Of the following, which conclusion is best supported by the evidence above?

The higher the temperature of a given area, the more likely it is that the water levels will vary.

The variation in temperature in the last decade has been less than the fluctuation of moisture.

When temperatures rise north of the 46th parallel, natural water exchange between land and atmosphere must change in the same proportion.

Within the last ten years, water table and precipitation levels have varied more in the Pacific Northwest than they have in Canada.

Canada will have more stability in weather than will the area of the United States above the 46th parallel.

Can someone please suggest why is B not correct? I think the years mentioned in the stimuli do have some role to play as it is talking about different timeframe.
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Temperatures in the Pacific Northwest have risen steadily [#permalink]

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22 Jul 2015, 13:17
I'm curious as to how so many people chose "D" as the right answer. There's no indication in the question that the water/precipitation levels for Canada have fluctuated "no more than" 3 points in the last decade. For all we know, a study in 1992 could merely be talking about the moisture fluctuations for solely that year. Aren't we all making a HUGE assumption here?

If you were making that assumption, then choice B could be correct as well, aside from the fact that you're comparing two completely unrelated numbers. Can anyone shed any light on this?
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Re: Temperatures in the Pacific Northwest have risen steadily [#permalink]

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31 Jul 2015, 08:16
BicepBrachii wrote:
I'm curious as to how so many people chose "D" as the right answer. There's no indication in the question that the water/precipitation levels for Canada have fluctuated "no more than" 3 points in the last decade. For all we know, a study in 1992 could merely be talking about the moisture fluctuations for solely that year. Aren't we all making a HUGE assumption here?

If you were making that assumption, then choice B could be correct as well, aside from the fact that you're comparing two completely unrelated numbers. Can anyone shed any light on this?

"research from a 1992 study measures the relational swing in moisture levels at no more than three points"...this is the last line of the passage. It is said in the passage that A stable level is in the range of 2 to 4 units(note the units).Hence,nothing is assumed and D is the correct choice.
hope this helps
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Temperatures in the Pacific Northwest have risen steadily [#permalink]

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31 Jul 2015, 09:06
manojsundar1 wrote:
BicepBrachii wrote:
I'm curious as to how so many people chose "D" as the right answer. There's no indication in the question that the water/precipitation levels for Canada have fluctuated "no more than" 3 points in the last decade. For all we know, a study in 1992 could merely be talking about the moisture fluctuations for solely that year. Aren't we all making a HUGE assumption here?

If you were making that assumption, then choice B could be correct as well, aside from the fact that you're comparing two completely unrelated numbers. Can anyone shed any light on this?

"research from a 1992 study measures the relational swing in moisture levels at no more than three points"...this is the last line of the passage. It is said in the passage that A stable level is in the range of 2 to 4 units(note the units).Hence,nothing is assumed and D is the correct choice.
hope this helps

Did you even read my response? My point of contention is that you are assuming that "a research study from 1992" is speaking for the last decade. How can you make that assumption without the passage saying so?

Please don't offer a response if you're not going to contribute anything new; what you have said is simply a rehash of what was said above.

I am not saying that there is a better answer than D among the other answers, but I am making the claim that choice D is a horribly written "right" choice.
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Re: Temperatures in the Pacific Northwest have risen steadily [#permalink]

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22 Apr 2016, 20:51
I eliminated all but A and D. D seemed more appropriate..took me over 2 minutes to solve it...what's the source??
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Re: Temperatures in the Pacific Northwest have risen steadily [#permalink]

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16 Jul 2016, 07:21
Praetorian wrote:
Temperatures in the Pacific Northwest have risen steadily since 1981, averaging 2.07 degrees Fahrenheit warmer north of the 46th parallel than in the previous decade. Precipitation and water-table levels, which have historically maintained a measurable relationship to each other (within a scaled range of two to four points), have varied drastically from 1987 to 1991, sometimes deviating as much as six points in fewer than eight months. Reports from Canada indicate a similar median temperature increase, estimated at 2.02 degrees Fahrenheit; research from a 1992 study measures the relational swing in moisture levels at no more than three points.

Of the following, which conclusion is best supported by the evidence above?

The higher the temperature of a given area, the more likely it is that the water levels will vary.

The variation in temperature in the last decade has been less than the fluctuation of moisture.

When temperatures rise north of the 46th parallel, natural water exchange between land and atmosphere must change in the same proportion.

Within the last ten years, water table and precipitation levels have varied more in the Pacific Northwest than they have in Canada.

Canada will have more stability in weather than will the area of the United States above the 46th parallel.

How would someone know "Precipitation and water-table" is same as "moisture levels", unless he is a SME?

Any thought/idea on how to identify & tackle such technicalities in case we encounter such cases in real GMAT?
Verbal Expert
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Temperatures in the Pacific Northwest have risen steadily [#permalink]

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19 Jul 2016, 06:00
Praetorian wrote:
Temperatures in the Pacific Northwest have risen steadily since 1981, averaging 2.07 degrees Fahrenheit warmer north of the 46th parallel than in the previous decade. Precipitation and water-table levels, which have historically maintained a measurable relationship to each other (within a scaled range of two to four points), have varied drastically from 1987 to 1991, sometimes deviating as much as six points in fewer than eight months. Reports from Canada indicate a similar median temperature increase, estimated at 2.02 degrees Fahrenheit; research from a 1992 study measures the relational swing in moisture levels at no more than three points.

Of the following, which conclusion is best supported by the evidence above?

The higher the temperature of a given area, the more likely it is that the water levels will vary.

The variation in temperature in the last decade has been less than the fluctuation of moisture.

When temperatures rise north of the 46th parallel, natural water exchange between land and atmosphere must change in the same proportion.

Within the last ten years, water table and precipitation levels have varied more in the Pacific Northwest than they have in Canada.

Canada will have more stability in weather than will the area of the United States above the 46th parallel.

How would someone know "Precipitation and water-table" is same as "moisture levels", unless he is a SME?

Any thought/idea on how to identify & tackle such technicalities in case we encounter such cases in real GMAT?

In real GMAT, one is not expected to use any outside knowledge in order to arrive at the correct answer. Rather, using outside knowledge may sometimes lead to a wrong answer. The subject question appears to be a bit too demanding on this aspect.
Temperatures in the Pacific Northwest have risen steadily   [#permalink] 19 Jul 2016, 06:00
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# Temperatures in the Pacific Northwest have risen steadily

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