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by YellowSapphire » Tue Jan 04, 2011 9:24 am
Source: Veritas Prep [800score]

A new study reports that every U.S. president has had an IQ that placed him in the top two percent of the population: 138 or above. However, a different study focusing on leadership ability and potential concluded that the optimal IQ for a national leader is 125-above average, but not in the top two percent. Therefore, no United States president has had an IQ optimal for a national leader.

Which of the following, if true, most seriously weakens the conclusion above?

A. John F. Kennedy's IQ as reported in the second study was 127; in the first, 159.
B. A president's election in the US depends less on his leadership potential than on the public's perception of his intelligence.
C. Leadership ability in the second study was determined by studying the IQs of current national leaders from 100 different countries around the world.
D. The calculation of IQ is not an exact science; the margin of error can be as great as 3-4%.
E. IQ is only one of many factors that determines a national leader's success.

OA: A
Last edited by YellowSapphire on Sun Jan 09, 2011 10:55 pm, edited 1 time in total.
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Source: — Critical Reasoning |

by bblast » Tue Jan 04, 2011 10:15 am
I think A is the only feasible option.

It proves that the study and its conclusions are itself flawed giving skewed results on the same sample : hence the conclusion is weakened.
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by prachich1987 » Wed Jan 05, 2011 3:35 am
what's the OA?
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by mundasingh123 » Sun Jan 09, 2011 5:26 am
Whats the Source ? Veritas ?
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by YellowSapphire » Sun Jan 09, 2011 11:17 pm
I got it.

"A" explains that both the studies provided different IQ that matches with above one.
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by shashanksahni05 » Tue Jan 11, 2011 6:00 am
what is the correct answer
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by prachich1987 » Tue Jan 11, 2011 6:05 am
OA is A
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by Target2009 » Tue Jan 11, 2011 8:57 pm
A
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by mundasingh123 » Tue Jan 11, 2011 10:46 pm
Why Not C.
I thought A seems to be saying that the Leaders were judged on different Parameters in the 2 studies.
In the First 1 :Intelligene
2nd :leadership Potential
Its very well possible that a person gets judged on Different Parameters and gets Different Gradings in 2 Different Studies
Guys who choase A , i think, went with what seems to be the most common technique of undermining the credibilty of the study to weaken the Conclusion.
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