empirical {prob} | R Documentation |
Calculates relative frequencies of the rows of a data frame.
empirical(x)
x |
a data frame. |
The function works by adding a probs
column to x
with equally likely entries of 1/n, where n is the number of rows. Then it aggregates the duplicated rows of x
while accumulating the probabilities associated with each.
A data frame formed by aggregating the rows of x
. A probs
column is added giving the relative frequencies of each of the rows.
G. Jay Kerns gkerns@ysu.edu.
S <- tosscoin(2, makespace = TRUE) sims <- sim(S, ntrials = 50000) empirical(sims)