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| It's estimated using the Current Population Survey. |
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| Current Population Survey |
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| It's more complicated than simple random sampling. It's based on a nationwide probability sample of about 110,000 persons that are interviewed monthly. |
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| Consists of either a city or a county or a group of contiguous counties. |
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| Consists of about 4 housing units each. Surveyed every person in the housing unit who was 16 or older. |
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| When people are regularly surveyed, their actual reponses may be changed as a result. This is called ... |
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| It's the percentage of the civilian labor force which is unemployed. |
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| They are less informative than simple random samples of the same size, so therefore the simple random sample formulas do not apply. |
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| Clustering tends to reduce the precision of the Bureau's estimates, adding .......improves the precision. |
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| To obtain Standard Error for the cluster samples, you can use the ........., by splitting the sample into two halves and see how well they agree. |
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| More hard to detect than chance error, especially if it operates more or less evenly across the sample. You have to look beyond the sample data to find it. |
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