不泊岸 · 2021年03月16日
NO.PZ2016062402000008
问题如下：
Which of the following statements about the normal distribution is not accurate?
选项：
A.Kurtosis equals 3.
B.Skewness equals 1.
C.The entire distribution can be characterized by two moments, mean and variance.
D.The normal density function has the following expression:
解释：
Skewness is 0, kurtosis 3, the entire distribution is described by μ and σ, and the p.d.f. is correct.
No.PZ2016062402000008 (选择题)
NO.PZ2016062402000008问题如下Whiof the following statements about the normstribution is not accurate?Kurtosis equals 3. Skewness equals 1. The entire stribution ccharacterizetwo moments, meanvariance. The normnsity function hthe following expression: f(x)=12πσ2e−12σ2(x−μ)2f{(x)}=\frac1{\sqrt{2\pi\sigma^2}}e^{-\frac1{2\sigma^2}{(x-\mu)}^2}f(x)=2πσ21e−2σ21(x−μ)2Skewness is 0, kurtosis 3, the entire stribution is scribeμ anσ, anthe p.f. is correct.第几部分第几章节呢。？
mean应该是属于一阶？出题不严谨？
什么知识点呢？
