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Need help with 2.2.1 #24

Open latidoremi opened 9 months ago

latidoremi commented 9 months ago

The way I understand stratified sampling is this:

stratified0

so naturally

stratified1

but what is this fractional volume doing here?

stratified2

and I don't understand these two at all, each stratum is an integral over lambda i, shouldn't the integrand be f(x) itself?

stratified3