CAJ | 학술논문

实际问题中的许多自然现象或社会现象均服从或近似服从正态分布，正态分布在概率统计中也起着非常重要的作用，然而正态分布的概率计算却较为复杂。文章运用正态分布的概率密度函数的对称性，通过计算几类服从正态分布的随机变量的概率，避免了繁重的科学计算，同时也凸显出了对称性在正态分布概率计算方面的重要应用价值。
실제문제중적허다자연현상혹사회현상균복종혹근사복종정태분포，정태분포재개솔통계중야기착비상중요적작용，연이정태분포적개솔계산각교위복잡。문장운용정태분포적개솔밀도함수적대칭성，통과계산궤류복종정태분포적수궤변량적개솔，피면료번중적과학계산，동시야철현출료대칭성재정태분포개솔계산방면적중요응용개치。
In reality,many natural phenomena or social phenomena follow or approximate to nor-mal distribution,which plays a very important role in probability statistics,but the calculation of the probability of a normal distribution is rather complicated.The author of this paper,employs the symmetry of the probability density function of normal distribution,avoids the heavy scientif-ic computing by calculating several types of probability of normal distribution of random variables,and highlights the importance of symmetry in the normal distribution probability calculation.