Four Students Have Applied to a Special Program and Only

Four students have applied to a special program and only one can be accepted. They have taken a battery of 12 tests and all have exactly the same average score. The standard deviation of their test scores are: Student A = 3.12, Student B = 0.27, Student C = 13.45, Student D = 6.45. If consistency of performance is a criterion for acceptance, which of the four students should be selected?

A) A
B) B
C) C
D) D

Correct Answer:

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