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发表于 2009-6-27 10:42 PM
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本帖最后由 JL01 于 2009-6-27 23:44 编辑

http://en.wikipedia.org/wiki/Consumer_confidence
Consumer Confidence Index
Consumer Confidence Index (CCI) is a monthly release produced by the non-profit business group The Conference Board since 1967. The CCI is designed to assess the overall confidence, relative financial health and spending power of the US average consumer. The Conference Board releases three headline figures each month: Consumer Confidence Index, the Present Situation Index, and Expectations Index.
[edit] Methodology
The CCI is based on the data from a monthly survey of 5000 US households. The data is calculated for the United States as a whole and for each of the country’s nine census regions. The survey consists of five questions on the following topics: i) current business conditions, ii) business conditions for the next six months, iii) current employment conditions, iv) employment conditions for the next six months, v) total family income for the next six months. After all surveys are collected, each question’s positive responses are divided by the sum of its positive and negative responses. The resulting relative value is then used as an “index value” and compared against each respective monthly value for 1985. That year was chosen as a benchmark year because it was neither a peak nor trough in the businesss cycle. The index values for all five questions are averaged together to produce the CCI. The average of index values for questions i and iii form the Present Situation Index, and the average of index values for questions ii, iv and v form the Expectations Index.[1] |
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