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The number of North American children who are obese that is, [#permalink]
 13 Sep 2009, 08:19
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The number of North American children who are obese—that is, who have more body fat than do 85 percent of North American children their age—is steadily increasing, according to four major studies conducted over the past 15 years.
If the finding reported above is correct, it can be properly concluded that (A) when four major studies all produce similar results, those studies must be accurate (B) North American children have been progressively less physically active over the past 15 years (C) the number of North American children who are not obese increased over the past 15 years (D) over the past 15 years, the number of North American children who are underweight has declined (E) the incidence of obesity in North American children tends to increase as the children grow older
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Re: CR : North American children [#permalink]
13 Sep 2009, 12:25
IMO C..
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Re: CR : North American children [#permalink]
13 Sep 2009, 22:57
Could you please explain why you chose this option?
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Re: CR : North American children [#permalink]
15 Sep 2009, 10:32
IMO A
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Re: CR : North American children [#permalink]
15 Sep 2009, 11:44
amolsk11 wrote: The number of North American children who are obese—that is, who have more body fat than do 85 percent of North American children their age—is steadily increasing, according to four major studies conducted over the past 15 years.
If the finding reported above is correct, it can be properly concluded that
(A) when four major studies all produce similar results, those studies must be accurate
(B) North American children have been progressively less physically active over the past 15 years
(C) the number of North American children who are not obese increased over the past 15 years
(D) over the past 15 years, the number of North American children who are underweight has declined
(E) the incidence of obesity in North American children tends to increase as the children grow older I'm going with E. The conclusion cannot go outside of the premises. It must not have strong language. My summary of premises: Four studies over the past 15 years show that the number of North American children who are obese is steadily increasing. My conclusion: Therefore, obesity has increased as children have grown over the past 15 years. A) Not necessarily true and doesn't conclude the premises. B) This may be true but being less physically active isn't in the premises and cannot be concluded from the premises. C) This actually contradicts the stimulus. D) The stimulus says nothing about underweight children and it cannot be inferred from the stimulus. E) I like this answer. I'll go with E.
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Re: CR : North American children [#permalink]
15 Sep 2009, 11:50
IMO C OA C I think its quite simple .....forget about the argument and read this option. If the number of obese people has been increasing steadily that clearly means that irrespective of rate at which it is increasing , it has increased by some amount during last 15 years. please check / discuss in case
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Re: CR : North American children [#permalink]
15 Sep 2009, 11:52
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amolsk11 wrote: Could you please explain why you chose this option? I will also go with C. Consider this statement: The number of North American children who are obese—that is, who have more body fat than do 85 percent of North American children their age—is steadily increasing. In other words: Number of obese children is increasing, but the % of these children is constant (15% of the total number of children of their age). This means the total number of children is also increasing, for past 15 years. So, the number of North American children who are not obese increased over the past 15 years (85% of the total number of children).
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Re: CR : North American children [#permalink]
15 Sep 2009, 12:08
amolsk11 wrote: IMO C
OA C
I think its quite simple .....forget about the argument and read this option.
If the number of obese people has been increasing steadily that clearly means that irrespective of rate at which it is increasing , it has increased by some amount during last 15 years.
please check / discuss in case Hmmm ... I guess I didn't read it the way you did. I read it this way ... answer choice C states "the number of North American children who are not obese increased over the past 15 years." If more children are becoming obese then it means that the number of other children who are not obese would decrease. Oh well. Got it wrong. Nice question!
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Re: CR : North American children [#permalink]
10 May 2011, 04:34
C as the rise is steady means the number of people not obese is also increasing.
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Re: CR : North American children [#permalink]
13 Jul 2011, 11:36
I did not get this. If no. of obese children has increased that does not lead to the conclusion that number of non-obese children has increased as well. Total = Obese + Non-Obese If Obese goes UP, & Non-Obese goes DOWN, we can still have Total go UP.
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Re: CR : North American children [#permalink]
14 Jul 2011, 01:46
C) the number of North American children who are not obese increased over the past 15 years.
Tells that for obese children to increase the total number of children's population should increase. and the number of 'not obese children' who are 85% of the total children's population should also increase.
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Re: CR : North American children [#permalink]
14 Jul 2011, 03:28
common its d i m 100 percent sure
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Re: CR : North American children [#permalink]
14 Jul 2011, 03:32
its not c .question says obese people increased and the answer choice says the opposite.
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Re: CR : North American children [#permalink]
14 Jul 2011, 03:44
now i think its cccccccccccccccc
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Re: CR : North American children [#permalink]
14 Jul 2011, 13:39
X to Y ratio is same...X increasing , Y must increase too C is good
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Re: CR : North American children [#permalink]
14 Jul 2011, 16:11
For all my quant friends here, let's pick some numbers:
Year 1: 15 obese, 85 not obese
Year 2: 30 obese, 170 not obese
Year 3: 60 obese, 340 not obese
What is happening here? Just as the number of obese kids increases at a certain rate, so the number of not-obese kids increases at the same rate.
Be careful with percentiles or percentages. Consider it a fraction or a ratio. If the argument requires the ratio to remain constant, both numerator and denominator are either multiplied or divided by the same factor.
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Re: The number of North American children who are obese that is, [#permalink]
26 Dec 2011, 04:07
Oh. Very nice question. The number and percentages trap is set very nicely here. C should be the answer.
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Re: The number of North American children who are obese that is, [#permalink]
26 Dec 2011, 11:37
C as no other option fits the bill
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Re: The number of North American children who are obese that is,
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26 Dec 2011, 11:37
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