https://dart.googlesource.com/co19/+/refs/heads/master/TypeSystem/type-variance/out_non_covariant_A01_t05.dart
TypeSystem/type-variance/out_non_covariant_A01_t05.dart - co19 - Git at Google
type variancenoncovariantdartgit
https://www.ausimm.com/publications/conference-proceedings/eighth-world-conference-on-sampling-and-blending-2017/dependence-of-the-variance-of-lot-average-on-the-sampling-mode-and-heterogeneity-type-of-the-lot/
Dependence of the variance of lot average on the sampling mode and heterogeneity type of the lot
Pierre Gy showed in his early works that the results in estimating the variance of the mean value of continuous lots depends on sampling mode (random,...
of thedependencevariancelotaverage