摘要： A a abs 绝对值、模、字符的ASCII码值 acos 反余弦 acosh 反双曲余弦 acot 反余切 acoth 反双曲余切 acsc 反余割 acsch 反双曲余割 align 启动图形对象几何位置排列工具 all 所有元素非零为真 angle 相角 ans 表达式计算结果的缺省变量名 any 所有元素非全零为真 area 面域图 argnames 函数M文件宗量名 asec 反正割 asech 反双曲正割 asin 反正弦 asinh 反双曲正弦 assignin 向变量赋值 atan 反正切 atan2 四象限反正切 atanh 反双曲正切 autumn 红黄调秋色图阵 axes 阅读全文

摘要： In probability theory and statistics, a scale parameter is a special kind of numerical parameter of a parametric family of probability distributions. The larger the scale parameter, the more spread out the distribution.If a family of probability distributions is such that there is a parameter s (and 阅读全文

摘要： In statistics, a location family is a class of probability distributions parametrized by a scalar- or vector-valued parameter μ, which determines the "location" or shift of the distribution. Formally, this means that the probability density functions or probability mass functions in this c 阅读全文

摘要： In probability theory and statistics, a shape parameter is a kind of numerical parameter of a parametric family of probability distributions. A shape parameter is any parameter of a probability distri... 阅读全文