This parameter is used in recipes::step_window().
summary_stat(values = values_summary_stat)
values_summary_statAn object of class character of length 8.
values_summary_stat
#> [1] "mean" "median" "sd" "var" "sum" "prod" "min" "max"
summary_stat()
#> Rolling Summary Statistic (qualitative)
#> 8 possible values include:
#> 'mean', 'median', 'sd', 'var', 'sum', 'prod', 'min', and 'max'