Math
Which of the following sets must have the same standard deviation as set ?
A.
B.
C.
D.
E.
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse to see the answer)
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Verbal
A new species of fish has just been discovered living in great numbers in the waters off Papua New Guinea. The fish exhibits some characteristics belonging to sharks, such as a cartilaginous skeleton. However, the fish also exhibits characteristics belonging to eels, such as a long, snake-like body. Because of the habitat where it was found and its obviously eel-like body, almost all scientists believe that the fish is an eel. But the cartilaginous skeleton puzzles them, since no known eel possesses one. So scientists are still unsure as to the fish's precise classification, but they agreed immediately that the most logical classification would be as either a shark or an eel.
The statements above, if true, most strongly support which of the following?
A. To be placed into a certain classification, a fish must possess all the characteristics of that classification.
B. Physical characteristics, such as skeletons, are scientists' primary means of classifying new species.
C. Some fish with cartilaginous skeletons are not sharks.
D. The waters off Papua New Guinea are generally hospitable to eels.
E. A fish cannot be both a shark and an eel.
Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)
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