representative sample
- n the population is divided into strata and a random sample is taken from each stratum
representative sample :
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- Happier Marriage Leads To Better Health
Lee Rannals for redOrbit.com - Your Universe Online New evidence has surfaced showing a happy marriage can lead to a healthier life. Researchers wrote in the Journal of Marriage and Family they found evidence about how happy marriages help individuals sustain health over the long run. The team used data from a nationally representative sample of 1,681 married individuals followed over the course ...
July 4, 2013 - redOrbit