Six second grade students tried tossing a ball into a basket ten times each. The

Question

Six second grade students tried tossing a ball into a basket ten times each. Their teacher then suggested a different way of tossing the ball, and the six students tried again. The number of successful tosses, before and after the teacher's suggestion, are shown below.

Student A B C D E F
Before the suggestion (out of 10) 3 5 7 3 7 5
After the suggestion (out of 10) 5 5 4 5 4 5

In the ranking of the absolute values of the differences, child C's rank is ______. [Recall, differences of zero are not ranked.]
A) 1.5 B) 4.5 C) 3.5 D) 2.5

Explanation / Answer

The absolute difference of A is 2 B is 0 C is 3 D is 2 E is 3 F is 0 So the ranks of A and D are 1.5 the ranks of C and E are 3.5 We do not rank B and F So the answer is C )3.5

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