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根据苗圃中苗木样本的平均值(x)和标准离差(S’)的值,就可以利用标准正态分布的累积分布图,求出某种规格的苗木所占的百分比。图1是标准正态分布的累积
Based on the average nursery stock sample (x) and the standard deviation (s’) values, you can use the standard normal distribution of the cumulative distribution map, find the percentage of a certain size seedlings. Figure 1 shows the normalized normalized accumulation