If a variable \( X \) takes values \( 0,1,2, \ldots, n \) with frequencies \( { }^{n} C_{0},{ }^...

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Frequency (2001)
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If a variable \( X \) takes values \( 0,1,2, \ldots, n \) with frequencies \( { }^{n} C_{0},{ }^{n} C_{1},{ }^{n} C_{2}, \ldots,{ }^{n} C_{n} \), then write variance \( X \).
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