If I want to take the average energy of all of those, what I can do is go over to my data set.
如果我想得到这所有电子能的平均值,我就得去看一下我的数据库。
This would be an average adult male, 30 years old, the average height and weight, and surface area and temperature, and lots of characteristics of an average person.
包括普通成年男性,三十岁,平均身高和体重,平均表面积和体温,还有许多其他数据
You try to design actually I'm going to come back to that in a second. It's like you're trying to use a hash function that spread things out pretty evenly. But the places you store into in those lists may have to themselves have a small list in there, and when you go to check something, you may have to do a linear search through the elements in that list.
你尝试着去设计,实际上过会儿我会回头讲解这个问题,类似于你需要用一个哈希函数,非常平均的将物体分发出去,但是在列表中你数据,映射到的地方可能会有自己的一小段列表,当你回头查找数据的时候,你可能需要在那一小段列表中做线性查找。
In the case of Burt Malkiel's data, more than 11% per year and in the case of Roger Ibbotson's data between 7% and 8% per year of those returns can be explained either by backfill bias or survivorship bias.
在伯特·麦基尔的数据中,超过11%的年平均收益,在罗杰·伊博森的数据中,7%到8%的年平均收益,可以用生存偏差或回填偏差来解释
It turns out that if you look at the 2.5--sorry, the quarter million people on the movie database and compute their Bacon number, 2.8 the average Bacon number is 2.8.
结果发现,这2。5…对不起,如果你算一下电影数据库里这25万人,他们的平均Bacon数为。
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