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华赞 · 2023年10月08日

请问在讲义哪里

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: f(x)=12πσ2e12σ2(xμ)2f{(x)}=\frac1{\sqrt{2\pi\sigma^2}}e^{-\frac1{2\sigma^2}{(x-\mu)}^2}

解释:

Skewness is 0, kurtosis 3, the entire distribution is described by μ and σ, and the p.d.f. is correct.

第几部分第几章节呢。?

1 个答案

李坏_品职助教 · 2023年10月08日

嗨,爱思考的PZer你好:


Quantitative Analysis部分基础班讲义,P90和P57:

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