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개발자를 위한 필수 수학
book

개발자를 위한 필수 수학

by 토머스 닐드, 박해선
June 2024
Beginner to intermediate
352 pages
9h 29m
Korean
Hanbit Media, Inc.
Content preview from 개발자를 위한 필수 수학
198
개발자를 위한 필수 수학
파이썬으로 구현할 때 한 줄의
for
루프로 합 계산을 처리하면 편리합니다. [예제
5
-
15
]는 파
이썬으로 상관 계수를 직접 계산하는 방법입니다.
예제
5-15
파이썬에서 처음부터 상관 계수 계산하기
import
pandas
as
pd
from math import sqrt
# CSV에서 데이터 읽기
points = list(pd.read_csv("https://bit.ly/2KF29Bd").itertuples())
n = len(points)
numerator = n * sum(p.x * p.y for p in points) - \
sum(p.x for p in points) * sum(p.y for p in points)
denominator = sqrt(n*sum(p.x**2 for p in points) - sum(p.x for p in points)**2) \
* sqrt(n*sum(p.y**2 for p in points) - sum(p.y for p in points)**2)
corr = numerator / denominator
print(corr)
# 출력:
# 0.9575860952087218
5.7
통계적 유의성
선형 회귀에서 고려해야 할 또 다른 측면은 데이터에 있는 상관관계가 우연인지 살펴봐야 합니
다.
3
장에서 가설 ...
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Publisher Resources

ISBN: 9791169212502