中文说明：卡方检验用来检验分布的拟合性 比如正太分布对数正太分布高斯分布瑞利分布，韦伯分布等里面包含了对数据的检测以及统计的原理和方法
English Description：
Chi square test is used to test the fitting of distribution, such as normal distribution, logarithm distribution, Gaussian distribution, Rayleigh distribution, Weber distribution and so on. It contains the detection of data and the principle and method of statistics