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"Punch Of The Week" Team Members |
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| This Week's Punches |
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Analogy Question CUPOLA : ROOF :: A. branch : tree B. building : story C. bishop : scepter D. airplane : propeller E. statue : pedestal |
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Quantitative
Ability Which of the following operations does not alter the median of a given data, in which the number of terms is 11? I. Adding a non-negative constant to the largest number of the data II. Subtracting a non-negative constant from the smallest number of the data III. Multiplying all the numbers in the given data with a non-zero constant. A. Only I B. Only II C. Only III D. Both I and II E. Both I and III |
Click here for last week's Punch and explanatory answers for the same
Posted on 13-Aug-09
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So,folks here are the correct answers Analogy Question The correct answer is E. A cupola is a small structure built or resting on a roof (sometimes used as a belfry or lookout point). The statue on a pedestal is the closest parallel. |
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Problem Solving The correct answer is D. When we calculate the median of a given data, we first write all the numbers in the given data either in the ascending order or in the descending order and then we choose the middle most term which will be the 6th term in the case of our given data as it contains 11 terms. Assume that we have written the numbers in ascending order. Now if we add a non-negative constant to the largest number of this series, the largest number will still be the largest and hence its position in the series (last position) remains the same. So this will not alter the median of the data. Similarly, when we subtract a non-negative constant from the smallest number of the data, it still remains the smallest number and hence its position in the series (first position) remains unaltered thus resulting in no change in the median. When we multiply every term by a non-zero constant it is evident that the median of the data will definitely change. Hence, option (D). Click here for the next week's Punch |
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