How to generate a frequency table in R with with cumulative frequency and relative frequency

Question

I\'m new with R. I need to generate a simple Frequency Table (as in books) with cumulative frequency and relative frequency.

So I want to generate from some simple d

Answer 1

If you are looking for something pre-packaged, consider the freq() function from the descr package.

library(descr)
x = c(sample(10:20, 44, TRUE))
freq(x, plot = FALSE)

Or to get cumulative percents, use the ordered() function

freq(ordered(x), plot = FALSE)

To add a "cumulative frequencies" column:

tab = as.data.frame(freq(ordered(x), plot = FALSE))
CumFreq = cumsum(tab[-dim(tab)[1],]$Frequency)
tab$CumFreq = c(CumFreq, NA)
tab

If your data has missing values, a valid percent column is added to the table.

x = c(sample(10:20, 44, TRUE), NA, NA)
freq(ordered(x), plot = FALSE)