Mathematics Sequences and Series Arithmetic Progressions

If a variable takes values 0, 1, 2, 3, …, n with frequencies 1, C(n, 1), C(n, 2), C(n, 3),…, C(n, n) respectively, then the arithmetic mean is

1

2n

2

n + 1

3

n

4

\(\frac{{\rm{n}}}{2}\)

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