The process of dividing members of the population into homogeneous subgroups before sampling is______.

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问题 The process of dividing members of the population into homogeneous subgroups before sampling is______.

选项 A、random sampling
B、stratified sampling
C、systematic sampling
D、simple sampling

答案C

解析

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专业英语八级

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The process of dividing members of the population into homogeneous subgroups before sampling is______.

专业英语八级

Mostpeoplehaveexperiencedthefeeling,afterataxingmentalwork-out,thattheycannotbebotheredtomakeanymoredecision

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Theworld’spopulationcontinuestogrow.Therenowareabout4billionofusonearth.Thatcouldreach6billionbytheendof

"Ido."ToAmericansthosetwowordscarrygreatmeaning.Theycanevenchangeyourlife.Especiallyifyousaythematyourown

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A、preventagainstelectoralscandals.B、pushthroughelectoralreformproposals.C、defeattherulingpartyandcomeintopower.

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