CAT Questions | CAT Critical Reasoning Questions

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The question is from CAT Critical Reasoning. Critical Reasoning for Verbal Ability for CAT. Critical Reasoning questions that appear in the verbal section of CAT test Reading Ability, Comprehension and Reasoning. Have a look at this question from Critical Reasoning. Solve CAT Questions from Critical Reasoning to get more practice and 2IIMs CAT questions bank provides you with CAT questions that can help you gear for CAT Exam .

Question 3: Data on planes returning from bombing missions was used to study of the vulnerability of airplanes to enemy fire. Analyzing the pattern and frequency of hits from enemy gunfire, it was seen that some parts of planes were hit disproportionately more often than other parts. How could these planes be optimally reinforced with armor plating? There were tradeoffs to consider. Every addition of plating added to the weight of the plane, decreasing its performance. Therefore, reinforcements needed to be added only to the most vulnerable areas of the planes.

Which of the following can be concluded from the above?

  1. The parts hit disproportionately more than the others have to be reinforced as those received the maximum amount of damage.
  2. No conclusion can be drawn as the data set is incomplete. There is no data on the planes shot down.
  3. The parts with the least damage have to be reinforced, as the returning planes have survived attacks to the most damaged areas.
  4. Reinforcements have to be added to all areas of the plane.

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Explanatory Answer

Method of solving this CAT Question from Critical Reasoning:

This is a real life example of critical reasoning used to solve a military problem during the World War II. A mathematician named Abraham Wald was given this challenging problem by military officials.

Option A seems to be the logical conclusion. Counter-intuitively, Wald recommended just the opposite, the reinforcement of those areas with the least frequency of bullet holes.

Wald’s profound insight was to focus on the unseen. Taking survivorship bias into account, he grasped that the returning aircraft were the survivors, receiving enemy fire in non-vulnerable areas.

The downed aircraft (which were not part of the data set) were the ones that had received the fatal hits, most likely to the remaining areas. It was those remaining areas (the ones free of bullet holes in the surviving planes) that needed the extra armor plating.

The question is "Which of the following can be concluded from the above?"
The option is C

Hence, the answer is C

Choice C is the correct answer.


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