Norges Bank's latest Inflation Report, for example, provides a "fan chart" for interest rates, showing the probability distribution of rates until 2009, not a point forecast.

比如，挪威银行最新的通货膨胀报告提供了一个扇形利率图来描述未来到2009年期间利率水平的概率分布，而不是预测某个时点上的利率。

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The weekly chart of the Shanghai Index shows two important patterns. The first pattern is a head and shoulder pattern. The second pattern is the fan pattern.

上证指数周线图呈现两个重要的形态。第一个是头肩顶形态。第二个是扇形形态。

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It is the first time the bank's fan chart, which projects where inflation is likely to lie nine times out of ten, has encompassed deflation.

ECONOMIST: Debt and deflation

The trouble is that this centres the fan chart on the mode of the distribution (the single likeliest outcome), and not necessarily on the median (the value that divides the outcomes, ranked by size, exactly in two) or the mean (the sum of the outcomes divided by the number of outcomes).

ECONOMIST: A la mode | The

The following month's issue of the Bank's Inflation Report included a box on fan-chart methodology not stooping actually to mention Mr Wallis (one of Britain's top econometricians, by the way) but sort of responding to his points.

ECONOMIST: A la mode | The