Identify sampling techniques used
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Identify sampling techniques used

[From: ] [author: ] [Date: 12-06-30] [Hit: ]
The book answers says it is a stratified sample, but shouldnt a stratified sample involve grouping populations into subsets which share similar characteristics? It seems that all of the soybeans in the field are alike, and all of the one-acre plots seem the same. Thank you!-There are 48 strata.......
Hi,
Soybeans are planted on a 48-acre field. The field is divided into one-acre subplots. A sample is taken from each subplot to estimate the harvest. The book answers says it is a stratified sample, but shouldn't a stratified sample involve grouping populations into subsets which share similar characteristics? It seems that all of the soybeans in the field are alike, and all of the one-acre plots seem the same. Thank you!

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There are 48 strata. Or there is only one stratum. Or you did not read the whole entire question yet :)
The Wikipedia article here does not look to me as if anyone has disturbed it recently, and also it has some published references in case you doubt its accuracy:

http://en.wikipedia.org/wiki/Stratified_…
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