Figure 1: Normal probability density function, which illustrates that actual observations may vary from the expected (or average).

图1：正态概率分布函数，它表明实际的观测值可能会偏离期望值(或者平均值)。

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Figure 1 shows a typical normal probability density function, so called because most observations fall into this sort of distribution.

图1显示了一个典型的正态概率分布函数，这样命名是因为绝大多数值都属于这个分布范围内。

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Coordinates of a normal probability paper are calculated with a approximate formula of normal distribution integral curve and drawn on screen.

采用正态分布积分曲线的近似公式计算概率格纸的坐标，并在屏幕绘图。

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There is a 65 percent probability of an above-normal season and an overall 90 percent chance the season will be normal or above, the agency said.

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Perhaps there are probability distributions which give the appearance of being normal distributions, but in fact are not.

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If it were all normal, there would be far less collapse, and in all probability no galaxies (so, once again, no humans).

ECONOMIST: Astronomy