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relative frequency
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| # v vector input | |
| # relfreq output data.frame of frquency and relative frequency | |
| relfreq <- function(v){ | |
| tab.v <- table(v) | |
| result <- cbind(data.frame(tab.v), rel=tab.v/length(v)) | |
| result[,4] <- format(round(result[,4]*100, 2), nsmall = 2) | |
| names(result) <- c("var","freq",NA,"relfreq") | |
| return(result[order(-result$freq),c(1,2,4)]) | |
| } | |
| # > contoh <- c(1,2,3,5,2,5,2,5,3,6,2,6,3,6,3,6,2,8,2,7,2,7,2,8,3) | |
| # > relfreq(contoh) | |
| # var freq relfreq | |
| # 2 2 8 32.00 | |
| # 3 3 5 20.00 | |
| # 5 6 4 16.00 | |
| # 4 5 3 12.00 | |
| # 6 7 2 8.00 | |
| # 7 8 2 8.00 | |
| # 1 1 1 4.00 |
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