Changing Standard Deviation with Weights in "Distribution" Platform
This general topic has been discussed before here but I am unsatisfied. The JMP expert posted a formula that perhaps explains what's going on. But I have a conceptual question. I would think that weighting is useful to adjust estimates if one wants to weight, say, some subsamples more than others. Like if one had 100 men and 1,000 women, and one wanted to estimate the mean and SD of a sample that ...