NO.PZ2018101001000010
问题如下：
Tony wants to investigate that if his expense will change with the change of his salary. He selects 200 samples and makes the regression analysis. Then, he gets the following results.
Which of the following statements is most likely correct?
选项：
A. The change of his expense can explain 13.86% of his salary.
B. The change of his salary can explain 37.23% of his expense.
C. The change of his salary can explain 13.86% of his expense.
解释：
C is correct.
考点: Coefficient of Determination.
解析: 代表着自变量的变化可以解释百分之多少因变量的变化。由题干可知，自变量是他的工资，因变量是他的花费。由表可知， =13.86%，因此就代表着他工资的变化可以解释他花费的变化的13.86%。C选项是正确的。
以及std error含义？