R strata()

1 개요

R strata()

• "Stratified Sampling"

method

srswor (기본값)	simple random sampling without replacement → 비복원 단순랜덤샘플링
srswr	simple random sampling with replacement → 복원 단순랜덤샘플링
poisson	Poisson sampling → 포아송 샘플링
systematic	systematic sampling → 체계적 샘플링

2 예시

summary(warpbreaks)

table(warpbreaks$wool,warpbreaks$tension)

library(sampling)
s <- strata(warpbreaks,c("wool","tension"),size=c(2,2,2,2,2,2),method="srswor")
s

getdata(warpbreaks, s)

3 같이 보기

• R getdata()
• R mstage()
• R sample()
• R sampleBy()

4 참고

• https://www.rdocumentation.org/packages/sampling/versions/2.8/topics/strata