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[PS] Start continuous distributions
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\newpage
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\subsection{Stetige Verteilung}
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\subsection{Stetige Zufallsvariablen}
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\shortdefinition[Stetig verteilte Z.V] $\cX$ stetig, falls $\exists f_\cX : \R \rightarrow \R_+$, s.d. V.F. $F_\cX(x) = \int_{-\8}^{x} f_\cX(t) \dx t$.
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$f_\cX$ ist Dichte (pdf) von $\cX$
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% \shortdefinition[Stückw. st. diff. F.] TODO: Consider adding this, Slides Chapter 3, P56
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\shorttheorem Sei $F_\cX$ st. stückw. diff. auf Partition $-\8 = x_0 < x_1 \ldots < x_n = \8$.
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Dann $\cX$ stetig, mit $a_k$ beliebig und
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\[
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f_\cX = \begin{cases}
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F_\cX'(x) & \exists k \in \{0, 1, \ldots, n - 1\} \\
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a_k & x \in \{ x_1, \ldots, x_{n - 1} \}
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\end{cases}
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\]
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\shortremark $f_\cX$ fast analog zu Gew.F $p_\cX$. Also:\\
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$(\Sigma, p_\cX) \mapsto (\int, f_\cX)$ vom diskreten zu stetigen Fall
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