alleryWhat is the mean of the first five natural numbers 1, 2, 3, 4 and 5?
A2
B5
C4
D3
Answer & Solution
Correct answer: D. 3
1. Sum = 1 + 2 + 3 + 4 + 5 = 15.
2. Count = 5.
3. Mean = 15 / 5 = 3.
2 and 4 are not the balance point of the list and 5 is only the largest value.
_Source: Wikipedia, Arithmetic mean, Definition_
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