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handbook没错啊,P31:“high kurtosis indicates a higher probablty of extreme movements”意思只表示在极值的地方分布更为集中,图也是对的;
wiki上面的解释也是对的:“A distribution with positive excess kurtosis is called leptokurtic, or leptokurtotic. "Lepto-" means "slender"[1]. In terms of shape, a leptokurtic distribution has a more acute peak around the mean (that is, a lower probability than a normally distributed variable of values near the mean) and fatter tails (that is, a higher probability than a normally distributed variable of extreme values). “
但是尖峰肥尾这个说法有误导性,因为“尖峰”并不是指图像比较尖峰,而是说峰值比较多
真正地trick在于题目中的peak反而是指图形,故意混淆视听,大家在参加考试的时候要多多注意啊~~
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