Sampling Frequency and the Comparison Between Matched-Model and Hedonic Regression Price Indexes
抽样频率与匹配型号、特征回归价格指数的比较
prices, because the price/performance ratio of models sold in consecutive periods is worse than that of new models. This "unrepresentativeness" of the sample potentially might be reduced by obtaining higher-frequency data, thus increasing the fraction of models that are matched. We propose a set of conformable indexes to test this hypothesis. Using computer prices from the Buy Direct press, we find, contrary to initial expectations, that the bias in the matched-model price…