The paper uses the wine-quality ratings devised by James Halliday in his book Australia and New Zealand Wine Companion 2000 as the dependent variable in a regression-based analysis. Equations are developed for eight different wine varieties in Australia: Chardonnay, Riesling, Semillon, Sauvignon Blanc, Cabernet, Shiraz, Merlot and Pinot Noir. The independent variables having the greatest correlation with the quality rating include price range, winery rating, vintage, size of winery and region. The importance of these independent variables varies with the variety and some traditional indicators of quality, such as region, do not seem to have as great a correlation with quality as might be expected.
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Horowitz et al. (2002) studied this question.
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