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华赞 · 2024年11月06日

计算器

NO.PZ2023091601000105

问题如下:

Suppose that we have the following data on three features for each of three banks, A, B, and C:

Scale the features using normalization and standardization.

解释:

Standardization involves subtracting the mean of the observations across the three banks and dividing by their standard deviation separately for each feature. The normalization involves subtracting the minimum and dividing by the difference between the maximum and minimum.

As an example, undertaking the standardization for bank A and the customers feature, the calculation would be


Similarly, the normalization calculation for bank A and the customers feature would be


The full set of standardizations and normalizations is


这道题用计算器过程怎么计算

1 个答案

pzqa39 · 2024年11月07日

嗨,从没放弃的小努力你好:


假设题目给了k个数字。

①按2nd+7,逐个将题目数字输入X01-X0k中。其中的Y01-Y0k都默认显示为1,直接按向下箭头跳过即可,不需要输入。

②按2nd+8查看结果,显示为LIN,直接按向下箭头,一直找到σx,即总体标准差。如果是要计算样本标准差,则找到Sx即可。


我们的早读课里有关于计算器使用的视频哦

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

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2024-11-10 11:44 1 · 回答

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2024-04-20 23:32 2 · 回答