rb
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@ -71,13 +71,11 @@
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### Regressionsgerade berechnen
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### Regressionsgerade berechnen
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Beispiel:
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Beispiel:
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$$
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$
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x = [1, 2, 3, 4, 5], y = [2, 3, 5, 4, 6] \\
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x = [1, 2, 3, 4, 5], y = [2, 3, 5, 4, 6] \\
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y = mx+c
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y = mx+c
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$$
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$
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1. x, y Tabelle erstellen
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1. x, y Tabelle erstellen
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<div align="center">
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||x|y|x*y|x<sup>2<sup>|
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||x|y|x*y|x<sup>2<sup>|
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|---|---|---|---|---|
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|---|---|---|---|---|
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||1|2|2|1|
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||1|2|2|1|
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@ -87,14 +85,12 @@ $$
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||5|6|30|25|
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||5|6|30|25|
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|$$\sum$$|**15**|**20**|**69**|**55**|
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|$$\sum$$|**15**|**20**|**69**|**55**|
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</div>
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2. *c* Wert berechnen
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2. *c* Wert berechnen
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$$
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$
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c = \frac{\sum_y * \sum_x - \sum_x * \sum_{xy}}{n(\sum_{x^2}) - (\sum_x)^2} \\[1em]
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c = \frac{\sum_y * \sum_x - \sum_x * \sum_{xy}}{n(\sum_{x^2}) - (\sum_x)^2} \\[1em]
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c = \frac{20 * 55 - 15 * 69}{5*55 - 15^2} = 1.3
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c = \frac{20 * 55 - 15 * 69}{5*55 - 15^2} = 1.3
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$$
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$
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3. *m* Wert berechnen
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3. *m* Wert berechnen
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