matlab怎么求对数正态分布函数的分位数（反函数）么如题,最好有代码,今天刚刚知道matlab可以求分位数,
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 10:10:27
matlab怎么求对数正态分布函数的分位数（反函数）么如题,最好有代码,今天刚刚知道matlab可以求分位数,
matlab怎么求对数正态分布函数的分位数（反函数）么
如题,最好有代码,今天刚刚知道matlab可以求分位数,
matlab怎么求对数正态分布函数的分位数（反函数）么如题,最好有代码,今天刚刚知道matlab可以求分位数,
logninv Inverse of the lognormal cumulative distribution function (cdf).
X = logninv(P,MU,SIGMA) returns values at P of the inverse lognormal
cdf with distribution parameters MU and SIGMA.MU and SIGMA are the
mean and standard deviation,respectively,of the associated normal
distribution.The size of X is the common size of the input arguments.
A scalar input functions as a constant matrix of the same size as the
other inputs.
Default values for MU and SIGMA are 0 and 1,respectively.
[X,XLO,XUP] = logninv(P,MU,SIGMA,PCOV,ALPHA) returns confidence bounds
for X when the input parameters MU and SIGMA are estimates.PCOV is a
2-by-2 matrix containing the covariance matrix of the estimated parameters.
ALPHA has a default value of 0.05,and specifies 100*(1-ALPHA)% confidence
bounds.XLO and XUP are arrays of the same size as X containing the lower
and upper confidence bounds.
比如期望0,标准差1的对数正态分布,求1%分位数
输入
logninv(0.01,0,1)
即可