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hi,CAN SOMEONE HELP ME UNDERSTAND HOW THE STRATIFIED SAMPLING 3 ACTUALLY WORKS WITH THE DATA? WHEN SHOULD I USE IT VS. STRATIFIED SAMPLING 2 OPTION?THANK YOU!
Stratified sampling 3 means that rows are chosen at random within N strata defined by the user.
In each stratum, the number of sampled observations is proportional to a relative frequency supplied by the user.
Stratified sampling 2 is the same except the relative frequency is fixed by the relative frequency of the stratum of your sheet ( it take into account the proportions of each strata) .
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