Helper function to be used as the statistic parameter to the boot function from the boot package. The boot function generates replicates of a statistic using bootstrap resampling. This function can be used when wishing to bootstrap the mean of possible ratings returned by zipf_hcp.
mean_rating(data, index)| param | details |
|---|---|
| data | dataframe |
| index | row indexes |
Imagine zipf_hcp has been used to handicap a race, but the sample of races used is only small, this is a good time to use those races with the mean_rating and boot functions to resample them and generate a more robust mean
library(boot)
hcp_out # this is the list returned by 'zipf_hcp'
boot(data = hcp_out$ratings, statistic = mean_rating, R = 1000)