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nounpeople having the same social, economic, or educational status
Similar:
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nounan abstract place usually conceived as having depthtype of:
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nouna subpopulation divided into a stratified samplingtype of:
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nounone of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)type of:
Explanation of stratum
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