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The skewness factor (skewness, third statistical moment) specifies the degree of a signal's asymmetry in reference to its standard distribution. The lower the skewness, the more evenly distributed the signal. A signal with a high skewness factor has many large amplitudes in the assessment range.
A symmetrically distributed signal has a skewness factor of 0. Depending on the direction of the slant, the skewness can be positive or negative. A considerable slant means approximately a skewness factor of ±1.
A large kurtosis factor combined with a large skewness factor indicates electrostatic discharge.
偏度系数(第三标准矩，M3) 定义了信号相对于其标准分布的不对称程度。偏斜度越低，信号的分布就越均匀。具有高偏态系数的信号在评估范围内具有较多的大振幅信号。
对称分布信号的偏态系数为 0。根据倾斜的方向，偏度可以是正的，也可以是负的。相当大的倾斜意味着大约±1的偏态系数。
大的峰度因数与大偏态系数相结合，表明静电放电。（电气领域）