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Basic methods to compute the required sample size are well understood and supported by widely available software … methods to compute the power of a complex design; and (3) methods to consider in the sample size calculation adjustments for …
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Context effects, where a characteristic of an upper-level unit or cluster (e.g., a country) affects outcomes and relationships at a lower level (e.g., that of the individual), are a primary object of sociological inquiry. In recent years, sociologists have increasingly analyzed such effects...
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to oil prices means that particular attention is paid to the breakeven price and cost optimisation. Projects which are …
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