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dejiazheng · 2023年12月08日

详细计算步骤是什么?

* 问题详情,请 查看题干

NO.PZ201512020300000606

问题如下:

Based on Exhibit 1, for the firm with ID #3, Steele should compute the scaled value for the “Interest Expense” variable as:

选项:

A.

0.008

B.

0.083

C.

0.250

解释:

B is correct. Steele uses normalization to scale the financial data. Normalization is the process of rescaling numeric variables in the range of [0, 1]. To normalize variable X, the minimum value (Xmin) is subtracted from each observation
(
Xi), and then this value is divided by the difference between the maximum and minimum values of X (Xmax Xmin) :The firm with ID #3 has an interest expense of 1.2. So, its normalized value is calculated as Xi (normalized) = 0.083



我的计算理解是将4家公司的利息成本数据进行计算,请老师指正错误:

分子:1.2减0.4;分母:1.5减0.4,

1 个答案

品职助教_七七 · 2023年12月08日

嗨,爱思考的PZer你好:


根据本题题干中的:“After applying these transformations, Steele scales the financial data using normalization. 可知Steele用来处理金融数据(the scaled value)的方法是normalization,需要使用normalization的公式:


根据题干给出的“a minimum of 0.2 and a maximum of 12.2”和ID 3中的1.2,得到:

Xi(normalized) =(1.2-0.2)/(12.2-0.2)=0.083

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虽然现在很辛苦,但努力过的感觉真的很好,加油!