神马作文网matlab 卡方分布
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matlab 卡方分布
请问在matlab里怎么计算卡方分布的值?
比如 alpha=0.05时
那么卡方分布 1-alpha/2（n）怎么计算?alpha/2 是下标
多谢指点
请问在matlab里怎么计算卡方分布的值?
比如 alpha=0.05时
那么卡方分布 1-alpha/2（n）怎么计算?alpha/2 是下标
多谢指点
1-chi2cdf(alpha/2,n)
注：
CHI2CDF Chi-square cumulative distribution function.
P = CHI2CDF(X,V) returns the chi-square cumulative distribution
function with V degrees of freedom at the values in X.
The chi-square density function with V degrees of freedom,
is the same as a gamma density function with parameters V/2 and 2.
The size of P is the common size of X and V.A scalar input
functions as a constant matrix of the same size as the other input.
注：
CHI2CDF Chi-square cumulative distribution function.
P = CHI2CDF(X,V) returns the chi-square cumulative distribution
function with V degrees of freedom at the values in X.
The chi-square density function with V degrees of freedom,
is the same as a gamma density function with parameters V/2 and 2.
The size of P is the common size of X and V.A scalar input
functions as a constant matrix of the same size as the other input.