as
Returns a map of the statistical summary data for the estimates. Each key is the name of the statistic concatenated with the name of the response and the value is the statistic value. The following statistics are provided: average, variance, standard deviation, standard error, and count. The names of the response and statistic are concatenated with an underscore. As an example, if the name of the response is "power" and the name of the statistic is "average", the resulting key would be "power_average".