b:head_first_statistics:using_discrete_probability_distributions
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| b:head_first_statistics:using_discrete_probability_distributions [2025/09/25 07:03] – [확률의 연산] hkimscil | b:head_first_statistics:using_discrete_probability_distributions [2025/09/25 07:04] (current) – [확률의 연산] hkimscil | ||
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| E(X1 + X2 + \ldots Xn) & = & nE(X) \\ | E(X1 + X2 + \ldots Xn) & = & nE(X) \\ | ||
| Var(X1 + X2 + \ldots Xn) & = & nVar(X) \\ | Var(X1 + X2 + \ldots Xn) & = & nVar(X) \\ | ||
| - | \\ | + | \text{c.f., } \;\; |
| Var(X1 + X1 + X1) & = & 9 * Var(X)\\ | Var(X1 + X1 + X1) & = & 9 * Var(X)\\ | ||
| \end{eqnarray*} | \end{eqnarray*} | ||
b/head_first_statistics/using_discrete_probability_distributions.1758751389.txt.gz · Last modified: by hkimscil