NO.PZ201904080100007701
问题如下:
1. The adjusted R2 and the standard error of the regression (SER) are closest to:
选项:
解释:
B is correct
考点:多元回归分析
解析:adjusted R方等于1- (75.2/176)/(233.1/179)= 67.2%
残差项对应的自由度是N-K-1=180-3-1=176, SER等于(75.2/176)^0.5=0.6537
为什么多元回归的题目会放在linear regression里?