NO.PZ2018122701000024
问题如下:
Consider the following QQ plot:
Empirical Quantiles
Which is the most likely true statement about the QQ plot?
选项:
A.
The empirical distribution is actually parametric.
B.
The empirical distribution has positive skew.
C.
The empirical distribution has leptokurtosis (excess kurtosis>0)
D.
If we perform a linear transformation of location and scale, the distribution is approximately normal.
解释:
C is correct.
考点Quantile-Quantile Plots
解析Heavy tails: the steeper slope - i.e., greater than 1.0 - at the tails indicates the tails are heavier than the reference distribution
图形表示不是skew吗?还有哪里体现出尖峰?对比画图,没有画出来?