GRE Problem Solving Question 554
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Source: Magoosh
If the mean of list A is 6.8 and the standard deviation is 3.6, then how many elements of list A are within 1 unit of standard deviation of the mean?v
A = {2, 9, 2, 6, 9, 10, 7, 4, 5, 14}
- A 3
- B 4
- C 5
- D 6
- E 7