기초를 탄탄히: Statistics

Sampling distributionSampling distribution is the distribution of the means of sample statistics where the samples are taken from a particular populat

Via simulation (Unit 1)Via theoretical methods that rely on the CLT (this Unit)Null hypothesisOften either a skeptical perspective or a claim to be te

상관관계수치형 vs 수치형 \- 피어슨 상관계수(correlation coefficient) 범주형 vs 범주형 \- 분할표 범주형 vs 수치형 \- group by - boxplot/violin chart다변수 시각화 \- 조건화를 통한 그룹 별 차트

In stratified sampling, the strata must be homogenous and also collectively exhaustive, and mutually exclusive as well. The strata must define a part