题目
What is the most appropriate interpretation of a slope coefficient estimate equal to 10.0?
选项
A.The predicted value of the dependent variable when the independent variable is zero is 10.0.
B.The predicted value of the independent variable when the dependent variable is zero is 0.1.
C.For every one unit change in the independent variable the model predicts that the dependent variable will change by 10 units.
D.For every one unit change in the independent variable the model predicts that the dependent variable will change by 0.1 units.
答案
C
解析
The slope coefficient is best interpreted as the predicted change in the dependent variable for a 1-unit change in the independent variable. If the slope coefficient estimate is 10.0 and the independent variable changes by one unit, the dependent variable will change by 10 units. The intercept term is best interpreted as the value of the dependent variable when the independent variable is equal to zero.斜率系数最好被解释为因变量为自变量的1单位的变化的预测的变化。 如果斜率系数估算值为10.0，并且自变量变化1个单位，则因变量将变化10个单位。 当自变量等于零时，截距项最好解释为因变量的值。