- #1
aydos
- 19
- 2
This seems like a simple problem but I cannot find an answer. Imagine I have 2 bags of samples with estimated means [itex] \hat{x} [/itex] and [itex] \hat{y}[/itex] and estimated variances [itex] \hat{\sigma_x} [/itex] and [itex] \hat{\sigma_y}[/itex]. The bags contain n and m samples respectivelly. Now assume I mix all the samples in a single bag.
Question: How do I estimate the variance of all the samples in this larger bag only using the statistics above?
Question: How do I estimate the variance of all the samples in this larger bag only using the statistics above?