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The Consumer Price Index (CPI) measures the average prices of goods and services purchased by consumers. In the United States, the CPI-U calculates the CPI for all urban consumers.The CPI-U Is calculated based on prices of food, clothing, shelter, fuels, transportation fares, charges for doctors' and dentists' services, drugs, and other goods and services that people buy for day-to-day living. All taxes directly associated with the purchase and use of items (such as, In the United States, sales taxes) are included in the index. An increase In CPI-U by a certain fractional amount means an increase by that fractional amount in overall prices within the relevant category.For analyzing general price trends in the economy, seasonally adjusted prices are usually preferred over unadjusted prices because adjusting eliminates the effect of changes that normally occur at the same time and in about the same magnitude every year—such as price movements resulting from climatic conditions, production cycles, model changeovers, and holidays.

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For each of the following, select Yes if the statement is inferable from the given information. Otherwise select No.

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The changes in seasonally adjusted prices for used cars and trucks between March 2010 and September 2010 were in most cases less in magnitude than the changes in seasonally adjusted prices of new vehicles for the same period.

The seasonally adjusted CPI-U for all items was higher in March 2010 than in the previous month.

The seasonally unadjusted change in the price of new vehicles in August 2010 over the previous month was about the same as the seasonally unadjusted change in the price of food away from home over the same period.

正确答案： 2,1,2

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知识点概述
主要考查对图表数据（CPI相关价格变动数据）的理解与分析，以及对文字信息（CPI - U的计算构成、季节性调整的作用等）和图表信息的综合运用能力。解析
首先通过文字了解CPI - U的概念及计算包含项目和季节性调整意义。然后观察图表中不同类别（如食品、能源等）在不同月份及12个月期间的价格变动百分比数据，可据此分析各类别价格趋势等情况，比如能源类在部分月份价格大幅波动等。

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