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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
Degrees of Freedom N-1
- Why n-1