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偏态分布资料不能按常态分布处理医学领域中,经常要求通过检查指标,划分正常与病理的界限。为此,需要对调查资料作正确的统计处理,确定指标的正常值范围。也就是决定事物质量的数量界限,和到胸中有“数”。根据资料概率分布类型的不同,确定正常值范围的统计方法也有所区别。例如常态分布资料的正常值范围通常用均数和标准差来计算,因为这是决定常态曲线的两个参
Biased distribution data can not be treated as normal distribution in the field of medicine, and often require examination of indicators to divide the boundaries between normal and pathological. To do this, it is necessary to correctly process the survey data and determine the normal range of the indicators. That is, the number of things that determine the quality of the boundaries, and to the chest with “number.” According to the different types of data probability distributions, the statistical methods for determining the range of normal values are also different. For example, the normal range of normal distribution data is usually calculated using the mean and standard deviation, because it is the two parameters that determine the normal curve.