수학:오차_분석

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수학:오차_분석 [2018/07/10 15:34] – [참고문헌] admin수학:오차_분석 [2018/11/09 09:57] – [선형 회귀 분석] admin
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 로 정의하면 계수 $a$와 $b$는 로 정의하면 계수 $a$와 $b$는
 $$a = \overline{Y} - b \overline{X}$$ $$a = \overline{Y} - b \overline{X}$$
-$$b = \frac{Cov(X,Y)}{Var(X)} = \frac{\sum_{i=1}^n (X_i-\overline{X}(Y_i-\overline{Y})}{\sum_{i=1}^n (X_i-\overline{X})^2}$$+$$b = \frac{Cov(X,Y)}{Var(X)} = \frac{\sum_{i=1}^n (X_i-\overline{X})(Y_i-\overline{Y})}{\sum_{i=1}^n (X_i-\overline{X})^2}$$
 로 결정된다. 나아가 로 결정된다. 나아가
 $$SS_x \equiv \sum_{i=1}^n (X_i-\overline{X})^2$$ $$SS_x \equiv \sum_{i=1}^n (X_i-\overline{X})^2$$
  • 수학/오차_분석.txt
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