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aileen20180623 · 2022年01月06日

为什么有的带%有的不带?

* 问题详情,请 查看题干

NO.PZ202109130200004203

问题如下:

Based on Batten's regression model, the coefficient of determination indicates that:

选项:

A.Stellar's returns explain 2.11% of the variability in CPIENG. B.Stellar's returns explain 14.52% of the variability in CPIENG. C.changes in CPIENG explain 2.11% of the variability in Stellar's returns.

解释:

C is correct. R2 is the coefficient of determination. In this case, it shows that 2.11% of the variability in Stellar's returns is explained by changes in CPIENG.

为什么这道课后题里面5%是不带%,而这道课后题里面是带了%后的,请问如何区分


If the ratio of net income to sales for a restaurant is 5%, the predicted ratio of cash flow from operations (CFO) to sales is closest to:

您的回答C, 正确答案是: C 

A

-4.054

B

0.524.

C

正确4.207

 
解析

C is correct. To make a prediction using the regression model, multiply the slope coefficient by the forecast of the independent variable and add the result to the intercept. Expected value of CFO to sales = 0.077 + (0.826 x 5) =4.207.


1 个答案

星星_品职助教 · 2022年01月07日

同学你好,

请提供你说的课后题的具体题号。

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