Module stats 

Simulation statistics: mean / standard error from accumulated sums (the shape parallel path loops naturally produce) and a numerically stable Welford accumulator for streaming use.

Structs

RunningStats

Welford’s online mean/variance accumulator: numerically stable for long streams and mergeable across partial results.

SimStats

A simulation estimate: sample mean, its standard error, and the sample size.

Functions

mean_std_err

Mean and standard error of the mean from sum and sum_sq of n samples — the reduction shape of a parallel path loop.