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c:ms:2019:schedule:week03 [2019/03/25 07:34] (current)
hkimscil created
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 +====== Week 3 내용 ======
 +===== Central Tendency =====
 +  * Central Tendency (집중경향)
 +  * Dispersion (variability) -- 분산(변산성)
 +  * [[:range]]
 +  * [[:​outliers]]:​ It is beyond our scope. Please just refer to it. Won't be appearing in tests. ​
 +  * [[:​Variance]] 분산 혹은 변량 ​
 +    * 표본변량 $ s^2 $
 +    * 모집단변량(전집) $ \sigma^2 $
 +  * [[:Standard Deviation]] 표준편차
 +  * Variance calculation formula
 +    * {{anchor:​variance_calculation_formula}} $ \displaystyle S_x^2 = \displaystyle \frac {\Sigma X^2 - \frac{(\Sigma X)^2}{N} } {N-1} $
 +    * $ \displaystyle \sigma_x^2 = \displaystyle \frac {\Sigma X^2 - \frac{(\Sigma X)^2}{N} } {N} = \displaystyle \frac {\Sigma X^2}{N} - \frac {(\Sigma X)^2}{N^2} = \displaystyle \frac {\Sigma X^2}{N} - \bigg(\frac {\Sigma X}{N}\bigg)^2 = \displaystyle \frac {\Sigma X^2}{N} - \mu^2 $
 +  * [[:Degrees of Freedom]] N-1
 +    * [[:Why n-1]]
 +===== Sampling Distribution,​ Standard Error =====
 +  * [[:​Sampling]]
 +  * [[:Sampling Distribution]]
 +  * [[:Central Limit Theorem]]
 +  * [[:Standard Error]]
 +===== CLT에 관한 정리 =====
  
c/ms/2019/schedule/week03.txt · Last modified: 2019/03/25 07:34 by hkimscil