Summary Statistics

What is statistics?

Using statistics in the real-world

Identifying data types

Descriptive vs. Inferential statistics

Measures of center

• mean
• median
• mode

• 평균은 이상치에 영향을 받지만, 중앙값은 이상치에 영향을 덜 받는다

Measure of spred

• range: maximum - minimum
• variance
• standard deviation
• quartiles

Probability and distributions

What are the chances?

확률: 0~1
sampling