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.
