问题如下图:
选项:
A.
B.
C.
解释:
老师这块一直不是很清楚,之前的题目本reading的27里面说的随着自由度的增加应该是置信区间变宽才对啊,那么应该更less peak fatter tails ?为什么还会趋近于标准正太分不?
NO.PZ2018062016000112 becomes fatter tails becomes less peake A is correct, when gree of freem of the t-stribution is increase, the shape of t-stribution approaches stanrnormstribution, the tails become less fat. 当t分布的自由度增加时,t分布的形状趋向标准正态分布,尾部会变的不那么肥。 能否画在一张图里?方便对比
难道C不对吗。。。。。。。